Upvote:1
Travel insurance is rather complicated.
Since you are staying in the US, your existing health care may cover you. Or not. Check with your health care insurer or read the fine print: Some insurance plans have a very restrictive definition of what "in-network" means.
The other major reason to get travel insurance would be to recover travel expenses in case you cant't actually travel or miss major parts of the trip due to sickness, delays, some natural disaster, political unrest, etc.
That's worth considering for an expensive trip, but you have to read the rules very carefully. Many policies have a large list of "exclusions" which protect the insurance from paying. Personally, I never found it to be worth it: once you find a policy that has decent coverage, it's often prohibitively expensive (10%-20% of the total trip cost).