Don't believe the MSM wrote:
It doesn't "give" him insurance, it provides a subsidy (like the large number of USA people on Medicaid, Medicare, Medi-...).
As of 1 January 2014, Members of Congress (MOC) and Congressional staff purchase their insurance through the District of Columbia’s small business health options program (SHOP) exchange, also known as DC Health Link. Contrary to popular belief, Congressional members do not receive free health care (either directly, or as through 100% insurance). As it does for other federal employees who purchase their insurance through the FEHBP, the federal government provides a subsidy equivalent to 72 percent of the weighted average of all FEHBP premiums.https://www.washingtonpost.com/news/fact-checker/wp/2017/04/17/do-members-of-congress-pay-for-100-percent-of-their-health-insurance/
i assume he has tricare