JACKSON, Wyo. — President Trump characterizes himself as a master deal maker who gets what he wants. But as he tries to pressure the Federal Reserve to lower interest rates, he is contending with a powerful opponent: technocrats.

The Fed lowered borrowing costs in July amid mounting trade uncertainties, but it has refused to promise the kind of aggressive rate-cutting campaign that Mr. Trump wants. The central bank’s unwillingness to bend to the White House’s wishes has frustrated Mr. Trump, who implied on Friday that the Fed chair he appointed, Jerome H. Powell, was America’s enemy.

But as central bankers and top economists gathered this weekend in Jackson, Wyo., for their annual conference, there was no indication that monetary policy thinking was inching any closer to Mr. Trump’s — and there were many signs that officials and top economists were closing ranks to protect Mr. Powell and the institution he leads as it came under nonstop attack.

Fed officials are economists and businesspeople who have pledged themselves, with almost religious zeal, to a set of twin goals: full employment and stable inflation. They are focusing on those mandates as they try to protect themselves — and the central bank — from being drawn into the political maw.