I don't think he understands or has the patience for the process.
Anything beyond what he can try to decree himself, he seems to lose interest / struggle with. Even tripping up his own party members in congress while they try to understand what he wants. He has threatened to veto things he pushed for... then signed them shortly after.
I think he might simply be incapable of anything requiring too many new steps for him.
There's no 3d chess going on.
First major tax reform in decades?
And of course he needed help from congress, he can't actually pass a bill without congress.
Trump's lack of effort to work with his own party was a constant topic, until his partly largely quit talking about it as no help became the status quo.
[0] https://publicintegrity.org/inequality-poverty-opportunity/t...
He "talked" about doing something about TikTok, then "did" something by signing an executive order on it.
EDIT: Downvotes... OK, so he didn't "talk about" and "do" this? Downvoters care to explain?
However, it is true that Trump is known for publicly "floating" a lot of ideas that he latter drops if they prove unpopular. But, if everybody cheers him for it it might actually make it more likely to happen.
This is a bit different than the way we do it -- we expect more statistical power with a saved history of repeated trials. "Floating" has been mentioned here. Perhaps "floating" involves trying two different frames to see how the media covers each, rather than numerous A/B trials for more statistical power.
Republicans have grown far more circumspect regarding their faith in intelligence services and Federal LEOs. Many see them as just players in and tools of the establishment political/media complex. At this point I don't think pardoning Snowden would hurt Trump with most Republicans. Certainly the 'Never Trumper' wing of Republicans would involuntarily soil themselves, but that's neither unusual nor significant.
As to why national reciprocity didn’t go through, it was because the margins in congress were too low. Republicans in NY IL and CA mostly aren’t into it.
Besides, it’s the same story as ever... “if we give you the thing you want, we can’t campaign on it next time!”.