Wisconsin Sen. Russell Feingold (D) on Thursday said he opposes a constitutional amendment to overturn a controversial Supreme Court decision last week that allowed an influx of corporate spending in political campaigns.

Feingold, who along with Sen. John McCain (R-Ariz.) has worked passionately for more than a decade to limit the influence of money in politics, said he simply cherishes the Bill of Rights as it stands.

"I think it's very unwise to change the Bill of Rights for any purpose," Feingold told The Hill. "I have taken that position against a number of very unwise ideas from the Contract With America crowd who helped make sure those amendments didn't get passed... The Constitution is the most important thing to me. I do acknowledge that the Supreme Court's lawless decision, which may have been one of the worst decisions in the history of the Supreme Court, does at least make people want to talk about that. And it concerns me, because the court is being reckless. But I am loath to do it."

Sen. John Kerry (D-Mass.) this week came out in support of a constitutional amendment to overturn the decision, and President Barack Obama and New York Sen. Charles Schumer (D) have both vowed to push legislation to blunt the decision's impact.