Allowing the Senate to kowtow to Trump in this matter neuters the Senate completely and would be a VIOLATION of their oath of office. A PRIMARY responsibility of the Senate under the Constitution is advice and consent. Let them know you will be tracking their votes on this and raising a ruckus if they cave.
Timeframe: Immediate, repeated until Senators have responded to you satisfactorily
Senator King: https://www.king.senate.gov/contact-home
Senator Collins: https://www.collins.senate.gov/contact