Senate Democrats told President Trump on Monday that they won’t accept a deal to lift sanctions on North Korea unless the country completely and permanently eliminates its nuclear and missile testing program.

“Sanctions relief by the U.S. and our allies should be dependent on dismantlement and removal of North Korea’s nuclear weapons and ballistic missile programs,” Senate Minority Leader Chuck Schumer, D-N.Y., and Sen. Bob Menendez, D-N.J. wrote in a letter to Trump. “Any deal that explicitly or implicitly gives North Korea sanctions relief for anything other than the verifiable performance of its obligations to dismantle its nuclear and missile arsenal is a bad deal.”