In 2001 the U.S. Supreme Court upheld the part of the McCain-Feingold Law that limits how much money parties can spend on their own nominees, if the party coordinates with those nominees. That case was FEC v Colorado Republican Federal Campaign Committee II, 533 U.S. 431.
Now the Republican National Senatorial Committee is making a strong effort to persuade the U.S. Supreme Court to reverse that precedent. On December 4, 2024, it filed a cert petition in National Republican Senatorial Committee v FEC, 24-3051. It points out that in 2014, Congress amended the law to expand the ability of a party to accept much greater contributions if the money is for one of three purposes: (1) to pay for a headquarters; (2) to pay for legal fees; (3) to pay for national conventions.
Also it points out that in almost half the states, in state and local elections, state law allows parties to spend as much money as they wish on their own candidates, without apparent harm.
Amici briefs in support of the Republican filing have been filed by fourteen states, by the Chamber of Commerce of the U.S., by the Institute for Free Speech, by U.S. Senator Mitch McConnell, by the Republican Governors’ Association, and by the Georgia Republican Party. No Democratic Party-aligned groups have filed such amici, even though if the Republicans prevail, the decision would be helpful to the Democratic Party.
The current Republican case lost in the Sixth Circuit last year, because the Sixth Circuit felt it cannot possibly disregard the old 2001 Colorado decision.