The Washington Post, 6/14:
A regional tax for Metro? Goal is to make pitch in Richmond, Annapolis in 2018
Top local government and business groups said Monday that they will press the Virginia and Maryland legislatures in early 2018 to approve a regional tax or other funding mechanism for Metro to help pay the steep costs of renovating the long-neglected system.
SNIP
Metro is the only major U.S. transit system that does not receive a substantial amount of revenue from a reliable funding stream, . . .
More here.
This issue has been "bubbling" for more than 10 years. See "WMATA: New Push to Win Dedicated Metro Funding" posted in January 2006!