WHY DID THIS TAKE SO LONG?

The Supreme Court decided that corporations are people back in January 2010 so why wasn't this bill introduced in February?

Sens. Udall, Bennet propose amendment to overturn Citizens United ruling
By Eric W. Dolan
Tuesday, November 1, 2011
THE RAW STORY

Democratic Sens. Tom Udall of New Mexico and Michael Bennet of Colorado introduced a constitutional amendment on Tuesday that would overturn the U.S. Supreme Court’s controversial 2010 decision in Citizens United v. Federal Election Commission.

The proposed amendment would grant Congress and the states the authority to regulate the campaign finance system, but would not dictate any specific policies or regulations.