NASA used to be nice over SLS was that they really didn't have a choice + congress pressure (hiring people who lost their jobs due to space shuttle cancelation)

NASA used to be nice over SLS was that they really didn't have a choice + congress pressure (hiring people who lost their jobs due to space shuttle cancelation) but now it seems like NASA _does_ have a choice to choose an alternative (and waaay cheaper) vehicle over SLS. Curious whether those senators will keep their pressure.