Obama’s pen-pal Ayatollah Khamenei unavailable for comment.

Via AP:

Republican lawmakers warned the leaders of Iran on Monday that any nuclear deal they cut with President Barack Obama could expire the day he leaves office. The White House denounced the GOP’s latest effort to undercut the international negotiations as a “rush to war.”

Monday’s open letter from 47 GOP senators marked an unusually public and aggressive attempt to undermine Obama and five world powers as negotiators try to strike an initial deal by the end of March to limit Iran’s nuclear programs.

Republicans say a deal would be insufficient and unenforceable, and they have made a series of proposals to undercut or block it — from requiring Senate say-so on any agreement to ordering new penalty sanctions against Iran or even making a pre-emptive declaration of war.

Obama, noting that some in Iran also want no part of any deal, said “I think it’s somewhat ironic that some members of Congress want to make common cause with the hardliners in Iran. It’s an unusual coalition.”