Originally Posted by nivsy
United said this was now policy for all USA flights. Is this true?
Yes.
The TSA will (or at least is supposed to) Xray all checked bags and open and examine any containing
unidentifiable or suspicious(sic) items. As mentioned, you can get TSA-issue locks which they are supposed (again) to lock after any exam thus protecting your bag from non-TSA personel.
Or you can simply leave your checked bags unlocked - in which case do
not put anything of value in them (a wise precaution anyway IMO).
Or you can use your own locks and risk the TSA breaking them and/or your bags. Also as mentioned, you have no claim to the airline or the TSA should they do so.
Happy trails