The Feds knew it was going to happen, that is why there were no FBI or ATF agents killed in the bombing. They were all out somehere.
Clinton needed an excuse to go after the rapidly growing militia movement in the USA. By tying McVey to having visited one militia for one time was all he needed. Didn’t seem strange that McVey was executed so quickly after trail. It ofter takes twenty years to get someone executed but McVey got it within a few montha to 1 year.
McVey, on his own part, seemed strangely copacetic with going swiftly into that good night. Mounted a perfunctory defense and did not press appeals. Perhaps he intended to perish in the initially planned bombing.