WASHINGTON -- Advocates of comprehensive immigration reform finally got their chance on Wednesday to see the full text of a bill from the Senate gang of eight. Despite their praise, they said they found plenty of reasons for concern.

Pro-reform groups hailed the bill overall as a historic step for immigrant rights, particularly its provision to allow undocumented immigrants to gain eventual citizenship. But the advocates said they don't plan to back down on efforts to improve it. Gay rights groups and supporters decried the lack of help for binational same-sex couples. Immigrant rights groups said they worried that the bill's pathway to citizenship is too lengthy and restrictive, and that border provisions may damage the ability of undocumented immigrants to gain legal status. Civil liberties groups said provisions to require E-Verify, a government online employment verification system, may be a slippery slope to a national ID system.

"It's sort of a 'Don't let the perfect be the enemy of the good,' and this isn't perfect, but it's probably better than good," Laura Lichter, president of the American Immigration Lawyers Association, said. "We really have something that is the product of this bipartisan committee. It's actually very interesting, some aspects are extremely creative, really good thinking about how to solve problems, and some of it really is holding on with a white-knuckled death grip to concepts in our existing immigration law that frankly don't work."

Senators have remained quiet on amendments they may plan, but there are likely to be many. On the more progressive end, there is likely to be an amendment to consider same-sex couples as families under immigration law, a measure that was left out of the gang of eight bill and is considered a non-starter by group members Sens. John McCain (R-Ariz.) and Lindsey Graham (R-S.C.).

Michael Tan, a staff attorney at the American Civil Liberties Union, said the group will continue to push to stop what it sees as damaging border provisions that may lead to more detentions, along with tying legalization to border triggers. The ACLU also is concerned about the E-Verify portion of the bill. Despite those issues, Tan said it's mostly a positive bill.

"That's the way I'm coming at it right now -- sort of heartened by some things and very troubled by other things," Tan said.

A coalition of immigrant right groups will lobby senators on the Judiciary Committee for amendments, said Deepak Bhargava, executive director of the Center for Community Change. He said his group and others will continue to push for inclusion of undocumented immigrants who entered the U.S. after the cutoff date of Dec. 31, 2011, and to simplify the path to citizenship. Bhargava said they hope to find support from Democrats such as Chris Coons of Delaware, Al Franken of Minnesota and Richard Blumenthal of Connecticut.

Overall, though, "it's certainly a more progressive starting point than we had in 2006 or 2007," Bhargava said.

On the other side, opponents of reform said there's not much to like in the bill and promised to fight to kill it.

Sen. Jeff Sessions (R-Ala.) said he appreciates "the hard work that went into this bill," but doesn't expect it to go anywhere. "As we explore its many flaws and loopholes in the coming days, I am confident the American public will firmly reject it -- and will demand reform that puts the national interest first," he said in a statement.

In the House, Rep. Lamar Smith (R-Texas) -- who formerly chaired the influential Judiciary Committee -- indicated he views the bill as a non-starter, and promised to continue work on separate legislation there instead.

"It's hard to believe, but the Senate immigration bill is worse than we thought," Smith said on the House floor. "Despite assurances, the border is not secured before almost everyone in the country illegally is given amnesty. The bill guarantees there will be a rush across the border to take advantage of massive amnesty."

There will be efforts from outside Washington to bring down the bill. NumbersUSA, a group that favors restricting immigration levels, said the bill would hurt American workers because it allows for more legal immigrants, not less, and the public will not support it. Founder Roy Beck, said the group would increase advertising against the bill and ask members to call Senate offices.

"It's really difficult to see how it could possibly be amended to make it successful," Beck said.

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  • The Naturalization Act of 1790

    The Naturalization Act of 1790 was our country's first set of laws dealing with citizenship. Applicants had to be "<a href="http://rs6.loc.gov/cgi-bin/ampage?collId=llsl&fileName=001/llsl001.db&recNum=226 " target="_hplink">a free white person</a>" of "good moral character." This excluded indentured servants and slaves. Good moral character was substantiated by establishing residence for at least one year in the state from where he was applying, and at least two years of residence in the country. The Naturalization Act of 1795 would extend that requirement to five years, and is still standard today.

  • The Fourteenth Amendment, 1868

    A Reconstruction Amendment that was added to the U.S. Constitution following the Civil War, the Citizenship Clause of the 14th Amendment establishes for the first time that children born on U.S. soil would be conferred U.S. citizenship regardless of their parent's citizenship status, race, or place of birth. Last year, Rep. Steve King (R-IA) introduced the <a href="http://www.govtrack.us/congress/bills/112/hr140 " target="_hplink">Birthright Citizenship Act of 2011</a> to Congress, and challenged this. The bill would require that at least one parent be a U.S. citizen or permanent resident for a child to be granted citizenship. According to the <a href="http://www.opencongress.org/bill/112-h140/text " target="_hplink">bill's text</a>, the Birthright Citizenship Act of 2011 would amend the Immigration and Nationality Act of 1952, and "clarify those classes of individuals born in the United States who are nationals and citizens of the United States at birth." Prior to this, Rep. Nathan Deal (R-GA) <a href="http://www.huffingtonpost.com/2009/05/26/nathan-deal-georgia-lawma_n_207485.html " target="_hplink">introduced</a> a similar <a href="http://www.opencongress.org/bill/111-h1868/show" target="_hplink">bill</a> in 2009.

  • The Naturalization Act of 1870

    The Naturalization Act of 1870<a href="http://thepoliticsofimmigration.org/pages/chronology.htm " target="_hplink"> explicitly extended</a> naturalization laws to "aliens of African nativity and persons of African descent." This meant that for the first time, African-American children would be conferred citizenship upon birth. Asian immigrants and other people of color are excluded per the Naturalization Acts of 1790 and 1795.

  • The Page Act of 1875

    Named after Republican Representative Horace F. Page, this is the first U.S. federal immigration law to explicitly prohibit the immigration of a particular group: persons of Asian descent. Primarily meant to limit Chinese immigrant labor and prostitution, the Page Act prohibited the immigration of: (1) contracted labor from "China, Japan, or any Oriental country" that was not "free and voluntary," (2) Chinese prostitution and (3) criminals and women who would engage in prostitution. Ultimately, the <a href="http://www.uchastings.edu/racism-race/pageact.html " target="_hplink">Page Act</a> severely <a href="http://immigration-online.org/228-page-act-united-states-1875.html " target="_hplink">restricted</a> the immigration of Asian women. Only 136 of the the nearly 40,000 Chinese immigrants who arrived in the months before the bill's enforcement were women. And, it would pave the way for the Chinese Exclusion Act. In this picture, Michael Lin, chair of the 1882 Project, a coalition of rights groups seeking a statement of regret over that year's Chinese Exclusion Act, speaks on May 26, 2011 in Washington, DC, at the US House of Representatives in front of a reproduction of a 19th-century sign that aimed at rousing up sentiment against Chinese Americans. Lawmakers introduced a bill that would offer an official statement of regret for the act, which banned further immigration of Chinese to the United States and ended citizenship rights for ethnic Chinese. (AFP PHOTO/SHAUN TANDON).

  • The Chinese Exclusion Act, 1882

    Signed by President Chester A. Arthur, the <a href="http://www.pbs.org/weta/thewest/resources/archives/seven/chinxact.htm " target="_hplink">Chinese Exclusion Act</a> was the first federal immigration law to prohibit immigration on the basis of race. The bill barred all Chinese laborers, skilled and unskilled, from immigrating to the U.S. for ten years. It was made permanent by 1903, and was not lifted until the 1943 Magnuson Act. The 1898 Supreme Court <a href="http://ocp.hul.harvard.edu/immigration/exclusion.html " target="_hplink">decision</a> in <em>United States v. Wong Kim Ark</em> finally extended naturalization laws to persons of Chinese descent by ruling that anyone born in the United States was indeed a U.S. citizen. This editorial cartoon from 1882 shows a Chinese man being excluded from entry to the "Golden Gate of Liberty." The sign next to the iron door reads, "Notice--Communist, Nihilist, Socialist, Fenian & Hoodlum welcome. But no admittance to Chinamen." At the bottom, the caption reads, "THE ONLY ONE BARRED OUT. Enlightened American Statesman--'We must draw the line <em>somewhere</em>, you know.'" (Image Source: Frank Leslie's illustrated newspaper, vol. 54 (1882 April 1), p. 96. [Public domain], via <a href="http://commons.wikimedia.org/wiki/File:The_only_one_barred_out_cph.3b48680.jpg" target="_hplink">Wikimedia Commons</a>).

  • The Naturalization Act of 1906

    The Naturalization Act of 1906 further <a href="http://www.understandingrace.org/history/gov/eastern_southern_immigration.html" target="_hplink">defined</a> the naturalization process: the ability to speak English was made a <a href="http://www.enotes.com/topic/Naturalization_Act_of_1906" target="_hplink">requisite</a> for immigrants to adjust their status.

  • The Immigration Act of 1924

    U.S. President Coolidge signed this U.S. federal <a href="http://history.state.gov/milestones/1921-1936/ImmigrationAct " target="_hplink">bill</a> into law. It capped the number of immigrants who could be admitted entry to the U.S. and barred immigration of persons who were not eligible for naturalization. And, as the Naturalization Act of 1790 required, an immigrant had to be white in order to naturalize. The quotas varied by country. Image Source: Flickr Creative Commons, <a href="http://www.flickr.com/photos/nycmarines/6306315902/" target="_hplink">NYCMarines</a>.

  • The Immigration and Nationality Act of 1952 (The McCarran-Walter Act)

    The <a href="https://docs.google.com/viewer?a=v&q=cache:zwaVG82lZisJ:www-rohan.sdsu.edu/dept/polsciwb/brianl/docs/1952McCarranWaltersAct.pdf+&hl=en&gl=us&pid=bl&srcid=ADGEESjEwx76FIBTixZAfyncZz-1CSuSeciv5qB6vvWTrUfW58XRpXq8zkpnI57XSuuG5Bu-WSySGbEhxYvZxP7y6qDQuOsDhgDa6qUqUaJ8F4imTzKJsVtppHc_-eew2dK6vGhoIUZs&sig=AHIEtbTNQ5GFiNMVS-xyThq8VVSj_gG9KA " target="_hplink">McCarran-Walter Act</a> kept up the controversial Immigration Act of 1924, but <a href="http://history.state.gov/milestones/1945-1952/ImmigrationAct" target="_hplink">formally</a> ended Asian exclusion.

  • Immigration and Nationality Act of 1965

    When President Lyndon Johnson signed the Immigration and Nationality Act of 1965, it <a href="http://library.uwb.edu/guides/USimmigration/1965_immigration_and_nationality_act.html" target="_hplink">abolished</a> the quota system that favored immigration from Europe and limited immigration from Asia and South America.

  • Illegal Immigration Reform and Immigrant Responsibility Act of 1996

    The 1996 <a href="http://www.uscis.gov/ilink/docView/PUBLAW/HTML/PUBLAW/0-0-0-10948.html " target="_hplink">Illegal Immigration Reform and Immigrant Responsibility Act</a> (IIRIRA) is a piece of legislation that <a href="http://library.uwb.edu/guides/usimmigration/1996_illegal_immigration_reform_and_immigrant_responsibility_act.html " target="_hplink">defined</a> an array of issues to do with legal and illegal immigration -- from outlining how border patrol agents should administer visa processing, to the minutiae of how to handle deportation proceedings -- IIRIRA established enforcement and patrolling practices.