If he asked subordinates or co-workers to be a surrogate for him and his wife, that is creepy and he should resign. It's totally inappropriate.
If he was and asked subordinates questions about general issues such as agencies or doctors that can help with surrogacy process, then he should not resign.
Word in AZ is there was another incident he would rather not discuss so this one was used a viable reason.
Either way it’s a damn shame to lose a good conservative rep with an A+ NRA rating. I just hope we can replace him with an equally good Freedom Caucus type person and not some GOPe cuck.