It does not matter what Trump thinks of Ryan, it matters what the Republican Voters think, & Ryan is being primaried by the base next year, The Republican party is grossly out of touch, but we will make believers out of them again, just as we did during the Presidential primaries.  Not even Trump can save people like Ryan, Strange (or anyone else endorsed by McConnell) Flake etc. Corker is gone as well. Trump is the only elected official in American with a national mandate,and when the Republican party bucks him, including on the wall, they are bucking the Republican voters, not Trump. Well, in 2018 we will get rid of all of our insubordinate, arrogant employees up for re-election. Indeed, we will even vote 4 challengers in the primaries who may have positions we don't support, because what someone campaigns on doesn't matter in the USA, we get the same garbage in both parties. So,this comes down to a power struggle between the voters & the big money donors and voters & we have the #s!