Does the US Customs need X-rays for immigration inspection?

I didn't ask for anything when I went through customs. At that time, I heard that I needed a little yellow book, so I went to some overseas medical examination bureaus or something. I haven't seen it for a long time, and I haven't heard that any friends want it. It is said that the chance of being drawn is less than 1%. I've never heard of asking for X-rays and examination reports. Suppose Xiao Huang should have all your medical records, so don't worry. Good luck with customs clearance.