Which constitution? The living, breating one, to go along with the living, breathing and flexible statutes, regulations, and so on?
100% of them will profess belief in the constitution.
Only a fool believes a word out of the mouth of an FBI agent.
Yup. Just like a lot of people on the left say that they believe in the Second Amendment. Oh yeah, they mean the one which says the federal government cannot disarm the (federally controlled) state national guard.