Trump got both of them out there and FORCED both to say that the border should be protected. They are on video record, now and for all time, that they CANNOT come out against maintaining border security.
Next step (and now much smaller) is agreeing to fund the Wall in defense of those borders.
Right - now we're just haggling over price... not morality or effectiveness or anything else. They're willing to give a drop in the bucket... just not to do the job correctly.