Trump used the phrase "DEPORTATION FORCE". A group of thousands of law enforcement which will yank between 11 and 34 million illegals (both numbers he has used) and will expel them from the USA.
If he's backing down from that, it's a big deal. It was a revolutionary thing, kicking out the illegals. If he's just crawling into bed with Hilary on 'letting these daily lawbreakers stay", it matters.