In her opening remarks at Kirkwood Community College in Iowa today, Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE offered the game-changing idea that she will champion: taking corrupt money out of politics, even if it means promoting a constitutional amendment to overturn the Citizens United v. Federal Election Commission case. As Iowa voters, American voters and the political media focus on this over time, the notion of a grand national battle led by Clinton to reform our politics is the kind of futuristic reforming politics that is fervently desired by the Democratic base and mainstream America.

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Ladies and gentlemen, this is a huge game-changer, presaging a long overdue national debate about the corruptions of money in politics after the Citizens United decision, which essentially gave the super-wealthy the power to buy elections by destroying bipartisan congressional efforts to limit the corrupting power of political money.

This is big news: Clinton supporting a constitutional amendment will make the corruption caused by money in politics one of the major issues in the campaign, and align Clinton with Sen. Elizabeth Warren Elizabeth WarrenBiden's fiscal program: What is the likely market impact? Warren, Schumer introduce plan for next president to cancel ,000 in student debt The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon MORE (D-Mass.) and the large majority of Americans who have expressed their disapproval of Citizens United in polls.

I will have much more to say about this topic in an upcoming column. For today, take note: Hillary Clinton's support for a national campaign against the corruption of big money in politics is a game-changer and an important moment in the 2016 campaign.

Budowsky was an aide to former Sen. Lloyd Bentsen (D-Texas) and former Rep. Bill Alexander (D-Ark.), who was then chief deputy majority whip of the House. He holds an LL.M. degree in international financial law from the London School of Economics. Contact him at brentbbi@webtv.net.