Obvious and well known. Bush Sr lived in D.C. probably longer than anywhere else. Grew up where? Dad was from Connecticut, yes? My current Congresscritter grew up here, indeed, and then spent years in D.C. as an aide to my previous Congresscritter. Carpetbaggers all of them!
The Bush’s moved to Texas in 1948. He was 24 years old. Went to congress in 1967. That is nearly 20 years right there. Certainly long enough to be a certified Texan.