H.R. 504- Rep. Lance NJ-7 - To Amend title 36 United States Code to require that the POW/MIA Flag be Displayed that the US Flag is displayed.
H. Res. 219- Rep. Walker R-NC-6 - Establishing a Select Committee on POW/MIA Affairs.
H. Res. 129/ S.61 - Calling on the DOD, other elements of the federal Government and foreign governments to intensify effort to investigate, recover, and identify all missing and unaccounted for US personnel.
H.R. 299/ S. 422 - Blue Water Navy Vietnam Veterans Act of 2017.
Here are a few websites and resources that might assist in researching and gathering information about Bills/Resolutions, POW/MIA issues, Department of Veterans Affairs, members of both the Senate and House Committees on Veterans' Affairs and Armed Services and Congress in general: