Do we have a motive? I haven’t seen the accused statement/confession or anything proclaiming why.

None of the proposed gun laws would have impacted of the assassination of Charlie Kirk, which apparently was carried out with a very common, bolt action, hunting rifle.

No, most native born Americans haven't traveled to more than 3 states, much less internationally. so the MAGAs won't care if other countries won't let us in. They'll just push for a quid pro quo (ok they don't know what that means, but you probably do)

born Americans have truly experienced overseas travel. Myself, I've visited Bishkek Kyrgyzstan and hiked in the Issyk-Kul mountains, gotten lost on the streets of Barcelona. toured Red Square, and walked the shores of Odessa. Jamaica was fun but the all inclusive didn't expose me to the real Jamaica

Mexico, Cruise ship vacations that bring them to Caribbean south American, or European tourist destinations all classify as "foreign travel" but are they really exposed to these other cultures? Oh, that all-inclusive trip to Jamaica was a real eye opener wasn't it?
My guess is that 15-20% of native

Americans are not globe trotters. While there are wildly varying statistics to sort through, if we break down non-native born citizens and native born citizens, then focus solely upon native born citizens, only about 1/3 even hold valid passports.
Then, if we look at where they travel to, Canada...

I personally have returned to tiktok, though i'm not a creator. I encourage everyone to return and blow it up. make your voices heard.
I also hope to find an alternative, several are in development. I think the Fediverse is an interesting place, hope that becomes our new home.

My hope is that Patriotic, freedom loving Americans will reject the "mass deportation" tactic. MAGA will likely cheer at first, but I think they will soon recognize what is happening and will turn on Turd.