Do you know the needs for my foreign spouse to go to the united states beside me?

I am A united states citizen with Mexican residency, planning to marry A guatemalan/spanish that is dual citizen. We have been perhaps maybe not searching for US residency on her, and probably won’t for the time that is long when. But i do want to be certain there will not be any nagging issue visiting my loved ones (within the US) along with her in the foreseeable future.