DISCLOSE Act was first introduced by Democrats in 2010 after the Supreme Court's Citizens United v. FEC ruling that allowed unlimited contributions and corporate funds to flow into political campaigns.

The legislation aims to amend the Federal Election Campaign Act of 1971 by prohibiting government contractors from making expenditures in elections, banning foreign influence in U.S. elections and forcing corporations to disclose campaign expenditures.

Democrats in the House passed the measure in 2010, but it was blocked by Republicans in the Senate. Democratic senators introduced an updated version of the bill in March of this year.