On June 4, U.S. Senators Tom Coburn (R-Oklahoma) and Mark Udall (D-Colorado) introduced a bill to delete any public funds for presidential convention expenses. The bill, if enacted, would not take effect until next year. Each party that polled at least 25% of the vote in the last presidential election is entitled to approximately $17,000,000 to help pay for its national presidential conventions. Parties that got 5% but under 25% get a lesser amount.
The bill would not have any effect on money spent by government to provide security for the conventions, which now requires an expenditure of approximately $100,000,000. Here is the text of the bill.