WASHINGTON -- Multi-trillion dollar financial institutions continue to get richer, exerting more and more control over both America's economy and its political system. The top 20 largest banks' assets are nearly equal to the nation's gross domestic product.

Now, Sen. Sherrod Brown (D-Ohio), along with unlikely ally Sen. David Vitter (R-La.), is launching an effort to break up the taxpayer-funded party on Wall Street.

"The best example is that 18 years ago, the largest six banks' combined assets were 16 percent of GDP. Today they're 64-65 percent of GDP," Brown said. "So the large banks are getting bigger and bigger, partly because of the financial crisis, partly because of the advantages they have."

The progressive Ohio senator sat down with The Huffington Post in advance of his Thursday speech on the Senate floor to discuss the need to address the "too big to fail" problem and the bipartisan support his work is attracting.

"The system is such that the big banks have far too many advantages, bestowed in part by the marketplace, because investors understand and the market understands that government might in fact bail them out, so there is lower risk for investors, and that means that they can borrow money at a lower cost than anybody else can," Brown said, explaining why small- and mid-sized banks are at a disadvantage.

Brown and Vitter announced on Thursday that they were working together on bipartisan legislation to address this problem.

"I think the fact that Sen. Brown and I are both here on the floor echoing each other's concerns, virtually repeating each other's arguments, is pretty significant," Vitter said Thursday in his Senate floor remarks. "I don't know if we quite define the political spectrum of the United States Senate, but we come pretty darned close. And yet, we absolutely agree about this threat."

In his floor remarks, Brown underscored the urgency -- and the challenge -- in breaking up the biggest banks.

"Just about the only people who will not benefit from reining in the megabanks are a few Wall Street executives," he said.

The two have teamed up in the past on the issue. In January, the Senate passed its bill directing the the Government Accountability Office to examine whether institutions with more than $500 billion in assets enjoy favorable pricing of their debt because of the assumption that the government will always bail them out.

Brown's push received a conservative boost this month from pundit George Will, who wrote that the senator's efforts deserve support from the right.

"By breaking up the biggest banks, conservatives will not be putting asunder what the free market has joined together," he wrote. "Government nurtured these behemoths by weaving an improvident safety net and by practicing crony capitalism. Dismantling them would be a blow against government that has become too big not to fail."

"When the Will column came out, it was pretty interesting," said Brown. "People I've known over the years who have my email address -- I got several emails from people who kind of surprised me that they supported the idea."

Conservative Wall Street Journal columnist Peggy Noonan has urged Republicans to break up the big banks, as has former GOP presidential candidate Jon Huntsman. The idea is also gaining ground with economists and bankers, such as Daniel Tarullo, a governor of the Federal Reserve System, and former Citigroup CEO Sandy Weill.

Brown noted that conservatives and progressives use slightly different arguments and talking points to get to the same conclusion, with conservatives condemning "crony capitalism" and progressives worrying about the corrupting influence of major financial institutions.

"[Will] blamed government for this more than I would, because what he leaves out is the influence of these huge institutions," Brown said. "When bad things happen in society and sometimes the government's complicit, what conservatives usually leave out, in my mind, is the effort [by the big banks] to get the government to be complicit," he said.

In 2010, Brown and then-Sen. Ted Kaufman (D-Del.) also offered an amendment to break up the big banks. Under that measure, no bank would have been allowed to hold more than 10 percent of the total amount of insured deposits, and a limit would have been placed on liabilities of a single bank to 2 percent of GDP.

It failed -- as they expected it would -- but attracted the support of three Republicans. (Vitter did not vote.) Brown said he had no doubt that his latest effort will get more backing in the current Senate, which has Wall Street critics like Elizabeth Warren (D-Mass.).

"I'm not going to mention names, but some who voted [against the 2010 amendment] have come up and said they're going to vote for it. And we just have a different Senate now from 2010," he said, adding, "More and more senators have come to me and said they are looking at this differently now."

Watch Brown's speech on the Senate floor:

Watch Vitter's speech on the Senate floor:

Also on HuffPost:

Loading Slideshow...
  • Rod Blagojevich Rampage

    During former Illinois Gov. Rod Blagojevich's <a href="http://www.huffingtonpost.com/2011/05/10/blagojevich-jury-hears-bl_n_860045.html">corruption trial</a>, tapes were played as evidence against him. Not only did they incriminate the former governor, but they also showed off his fondness for curse words. "I mean, I've got this thing and it's f*cking golden," Blagojevich told an aide, Doug Scofield. "And I'm just not giving it up for f*cking nothing. I'm not going to do it."

  • Biden: BFD

    Vice Presiden Joe Biden <a href="http://www.huffingtonpost.com/2010/03/23/a-big-fucking-deal-bidens_n_509927.html">dropped the f-bomb</a> live, on camera while congratulating Obama on passing health care reform. "This is a big f*cking deal," he said.

  • Bush Blasts Journalist

    Former President George W. Bush <a href="http://www.salon.com/2000/09/04/cuss_word/">made an offhand remark about a New York Times reporter </a> to former Vice President and running mate Dick Cheney in 2000 during his second-term election season. “There’s Adam Clymer — major league a**hole — from the New York Times,” Bush said.

  • Chris Christie Curses

    At one of his infamous town hall meetings, <a href="http://fairlawn-saddlebrook.patch.com/articles/christie-brands-sarlo-arrogant-sob">New Jersey Gov. Chris Christie slammed</a> a local Democratic lawmaker, calling him "one arrogant S.O.B" "He's got to be one arrogant S.O.B. ... to tell the people when they've been good enough [you] get your money back," Christie said.

  • Bloomberg Jokes Around

    New York City Mayor Michael Bloomberg was giving a speech at a Coney Island hot dog-eating contest when he realized how corny his speech was. "Who wrote this sh*t?" he asked, jokingly.

  • Obama Lets It Slip

    Obama has been praised for his clean mouth. But that doesn't mean the president hasn't let it slip on occasion. <a href="http://www.huffingtonpost.com/2012/04/12/obama-kanye-jay-z-jackass_n_1420683.html">Obama called Kanye West </a>a "jackass" -- twice, once in an off-the-record comment that circulated via Twitter, and later in an interview with The Atlantic. During the 2012 election he also unabashedly called <a href="http://www.huffingtonpost.com/2012/10/25/obama-romney-bullshitter_n_2018079.html">Gov. Mitt Romney a "bullsh*tter." </a>

  • Rick Santorum Rips A Reporter

    Former Republican presidential candidate <a href="http://communities.washingtontimes.com/neighborhood/ad-lib/2012/mar/26/rick-santorum-curses-out-ny-times-reporter-says-s-/">Rick Santorum blew up at a reporter </a>while signing autographs at a Wisconsin rally. New York Times reporter Jeff Zeleny clearly pushed Santorum's buttons, provoking the clean-cut republican to curse him out. "Quit distorting my words,” Santorum said, enraged. “If I see it, it’s bullsh*t! Come on, man! What are you doing?"

  • Dick Cheney Owns Up To It

    Former Vice President Dick Cheney had no problem owning up to a Senate-floor slip up. Cheney was caught telling Senator Patrick Leahy (D-VT) to "go f*ck yourself."

  • Nixon's Watergate Revelation

    The Watergate tapes revealed a lot about former President Richard Nixon, including his favorite curse words. Though he was <a href="http://www.reuters.com/article/2011/11/10/us-usa-nixon-tapes-idUSTRE7A979W20111110">known to swear</a> often in private, the tapes showcased his unrestrained bad language. In one instance he said, "I don't give a sh*t what happens, I want you all to stonewall it." That quote marked <a href="http://itre.cis.upenn.edu/~myl/languagelog/archives/003367.html">the first time the New York Times printed the word "sh*t."</a>