Murphy said he would donate 5 percent of his paycheck each month to a different charity. His first contribution of $8,700 will go to the family of Sgt. Gary Morales, a sheriff who was killed in February.

Murphy joins a growing movement among members of Congress to give up part of their salary since the $85 billion sequester will not cut their pay. In the House, Reps. Ami BeraAmerish (Ami) Babulal BeraWeek ahead: Defense spending ties up budget talks Week ahead in defense: Spending fight consumes Congress Out of their lane: DC celebs go bowling for charity MORE (D-Calif.) and Tammy Duckworth (D-Ill.) and Del. Eleanor Holmes Norton (D-D.C.) have said they would donate their pay to charity to share in the pain of the cuts.

Sens. Mark BegichMark Peter BegichPerez creates advisory team for DNC transition The future of the Arctic 2016’s battle for the Senate: A shifting map MORE (D-Alaska) and Barbara MikulskiBarbara MikulskiClinton: White House slow-walking Russia sanctions Top Lobbyists 2017: Hired Guns Gore wishes Mikulski a happy birthday at 'Inconvenient Sequel' premiere MORE (D-Md.) have said they would cut their pay as well, and President Obama and Defense Secretary Chuck HagelCharles (Chuck) Timothy HagelHagel: Trump is 'an embarrassment' Tax cut complete, hawks push for military increase Pentagon documents hundreds of serious misconduct cases against top brass MORE are making similar moves.

Congressional salaries are not explicitly exempted from the sequester cuts, although they end up being spared because the sequester is governed by a 1985 law that exempts them for technical reasons. For example, that law says federal "accounts" must be cut in a sequester, but member salaries are not technically an "account" as defined by the law.

Norton suggested this week that the old law should be updated to include member pay in future sequesters.