The rapper has been on dialysis four days a week.
The donation went to San Quentin and USP Lompoc.
Nagin served just over half of a 10-year sentence.
Waters shared the news on the House floor.
The COVID-19 relief effort is in collaboration with Twitter CEO Jack Dorsey.
“The risks associated with the defendant’s release have not changed.”
The Bay Area landmark is in fear of permanently closing its doors.