On September 19, over 200 U.S. political scientists published an open letter calling for Congress to pass a bill for multi-member U.S. House districts, combined with proportional representation. The group is organized under the name “Scholars for Redistricting Reform.” See the statement here.
A bill has been pending in Congress to make that change. It is HR 3863, by Congressman Don Beyer (D-Virginia). He has introduced it for several sessions of congress now.