Like all travel providers, Amtrak has been hit hard by the effects of COVID-19, as the vast majority of people have cut down on their travel. However, unlike airlines that received huge sums of bailout money, Amtrak is less posed to get government assistance. That is because Republicans for years (decades?) have been trying to eliminate Amtrak, so they’re not rushing to save the organization now.
In the short term, Amtrak cut service in order to match reduced demand. For example the San Joaquin line cut three daily round trips on March 26th, and the Capitol Corridor went from 15 to just 5 trips a day. Other Amtrak lines, like the Downeastern (in Maine) and Keystone (in Pennsylvania) completely shut down for a couple of months.