A new ad raising Barack Obama's ties to 60s-era radical William Ayers may violate election law, according to campaign finance experts interviewed by the Huffington Post.

The spot, released by the America Issues Project (an incorporated 501c(4) committee, according to a report by Politico's Ben Smith), intersperses images of Obama and Ayers, and features a narrator asking, "Why would Barack Obama be friends with someone who bombed the Capitol and is proud of it? Do you know enough...