All truckers have to have a valid CDL. This license is on file with the DOT and can be revoked anytime they now please.
I had gotten a CDL with all endorsements right before getting out of the Army. Never needed to use, but was a good resume enhancer. Texas wouldn’t let me renew when came time since my job position didn’t require one. I didn’t think that was quite fair but I had no choice but to let it go. In Texas of all states too.
I had mine until 2016. NC DOT let me keep it if I wanted, even though I wasn’t medically qualified a medical card.