A dispute over the State Department budget has pitted the chairman of the Senate Budget Committee, Sen. Kent Conrad of North Dakota, against a fellow Democrat and head of the Foreign Relations Committee, Sen. John F. Kerry of Massachusetts, and the Obama administration.

Mr. Conrad led an effort to slash President Obama’s $58 billion international affairs request for 2011 by $4 billion, a cut his committee approved last week. Despite protests from Secretary of State Hillary Rodham Clinton and all her living predecessors, the senator stood his ground on Wednesday.