I have a buddy who accidentally tried to fly with a gun in his bag out of DFW.
He has his concealed carry permit, and this was in Texas, so he had to pay a fairly substantial fine, but that was it (yes, he’s a white guy). Still made his flight in time.
Same friend had TSA pre check and Clear. TSA precheck, to their credit, stripped him of the privilege. Clear is still fine with this, though.