From Solve M.E. - a call to action for Advocacy Week: "Ask your Members of Congress to support the CARE for Long COVID Act!" https://p2a.co/Xpr5nVf This link goes to a form that sends an email to your government officials with one click. If you like you can modify their sample message before sending it.
Here is a summary of the CARE for Long Covid Act, from Senator Kaine's website: https://www.kaine.senate.gov/imo/media/doc/care_for_long_covid_act_one-pager10.pdf (the file name says "one-pager" but it's actually 6 pages) And this is the full text (23 pages): https://www.kaine.senate.gov/imo/media/doc/care_for_long_covid_act_bill_text.pdf