https://www.vice.com/en_us/article/5dpk58/amtraks-largest-union-doesnt-want-capitol-hill-rioters-on-its-trains

The largest union of Amtrak workers called on Amtrak to step up security measures in and around Washington, D.C. in the wake of the Capitol riot, including banning people on the no-fly list from purchasing tickets.

Citing security enhancements at airports, the Transportation Communications Union (TCU) which represents many customer-facing positions such as those who work on the trains and in stations said Amtrak must do more to step up security especially at Washington's Union Station.