Sen. (D-New Mexico) has long been a fan of and on Tuesday (Nov. 1) he joined a number of other Democrats on Capitol Hill calling for a Constitutional amendment that would .

Udall has introduced a bill with Sen. (D-Colorado) that would allow Congress to regulate the campaign finance system.

In order for an amendment to the Constitution to become law, it has to pass with a two-thirds majority of both houses of Congress and then be ratified by three-quarters of the 50 states.

The case built on an earlier Supreme Court decision, , which said spending money in elections is a form of speech. In the Citizens United case in 2010, the high court ruled it unconstitutional to regulate the money spent during elections by corporations and unions (that second part is often neglected).

Many supporters of the movement want to see Citizens United overturned.

“With the Supreme Court striking down the sensible regulations Congress has passed,” Udall said Tuesday, “the only way to address the root cause of this problem is to give Congress clear authority to regulate the campaign finance system.”

For a rebuttal, check out this video from of the libertarian magazine and website :

 

You can read Udall and Bennet’s amendment in full by .