Top congressional Democrats told President Trump on Friday that using the new House Intelligence Committee memo as a pretext to fire Deputy Attorney General Rod Rosenstein and therefore halt the Russia investigation would spark a “constitutional crisis.”

Senate Minority Leader Chuck Schumer of New York and House Minority Leader Nancy Pelosi of California said in a letter they are “alarmed” at reports that Trump may use the memo “as a pretext” to fire Rosenstein “in an effort to corruptly influence or impede” special counsel Robert Mueller’s investigation.