Well, defending Trump is like defending a kid denying he was trying to snag a handful of cookies while his hand is already deep down in the cookie jar with a fistful of cookies in it, so there's that rather monumental obstacle to try to get around before mounting any kind of argument in his defense.
If anything, there's those murky grey, shadowy areas within the fine print of the fine print where a miraculous successful defense of Trump's behavior can be mounted where 1+1=3 exists.
But it's already proven beyond doubt that ~98% of the Repub Party will defend Trump right to the very bitter end no matter how badly he screws things up for himself and the nation at large.
"Party before Country" is the battle cry for the GOP and the GOP is going to hammer that point home every single chance it gets. And that's where all of the deception, lies, misdirects and disingenuous intent from their leaders come into play.
The GOP leadership is compelled to do this for the simple reason that they have to lie to their constituents that they are so sympathetic to their concerns and will do everything they can to help them in order to get their votes, all while they stack their legislation ever higher with nothing but give-away's to the very wealthy.
edit - Trump and the GOP have done exactly this in all of its blatant glory from Day One of Trump's tenure.