Extremely misleading headline. Boyer most certainly did not back Trump on the wall. He simply conceded, when questioned, that walls work sometimes and are not immoral.
This is clickbait.
Saying they don't work and are immoral is the same as saying "we will never negotiate". Saying "they aren't immoral and do work" is the same, to me, as saying "yeah, okay you won on that. maybe something could be worked out, for the right concessions".