Customs and border control don't xray your stuff unless you're randomly selected. If you're randomly selected, tell them about the pump and CGM and how it can't be xray. Based on my experience with asshole CBP agents, they may "punish" you by throwing all your shit all over the place when they paw through your stuff, or you might get lucky and get just a normal search.
As for your phone, lock it with a password, disable fingerprint unlock, and good luck.
I wanted to link to CBP's help website for medical devices, but their HTTPS certificate is invalid lol. Fuck's sake.
https://www.tsa.gov/news/releases/2016/11/15/tsa-shares-tips...
And yet, these are the folks we 'trust' to protect our borders.
There is nothing "random" in the selection, let's not continue spreading this delusion. It took 4 trips to the US, for that sorry excuse of an AI they use for the selection, to finally decide I wasn't a threat.
If algorithms to generate numbers were all as random as the TSA one, I could probably predict every encryption key out there.
Once these backup mechanisms are in place, as a handy side effect, you're also covered for the CBP case.