A top Senate Democrat today endorsed a constitutional amendment to scale back the influence of the Supreme Court’s landmark Citizens United decision on campaign finance, adding to an increasingly vocal movement to restrict campaign spending and contributions.

Sen. Dick Durbin (D-Ill.) said at a hearing this afternoon that while he was originally reluctant to amend the Constitution, he now believes it is the only option to address a 2010 ruling he says has drowned out the voice of the average American with hundreds of millions of dollars from an elite few.

“Since the Supreme Court’s decision on Citizens United, we have seen the rapid rise of super PACs and unprecedented influence buying by wealthy individuals seeking to advance their agendas,” Durbin said at a hearing of the Senate Judiciary Subcommittee on the Constitution, Civil Rights and Human Rights, which he chairs.

“It’s increasingly clear that the only way to really reform our system is to pass a constitutional amendment to regulate how we finance our elections,” Durbin, the chamber’s Majority Whip, added.

Support for a constitutional amendment has intensified since the Supreme Court reaffirmed its Citizens United decision in June by striking a century-old ban on corporate political spending in Montana.