We all know startups are crossing that line all the time with their "off-sites," hanging out in Airbnbs and coding together for a week or so at a time around conferences.
"Coming in for an offsite? Think you'll be doing any work there?"
"I dunno, I guess it's possible?"
That's all it took. Obviously any further trips involved extensive coaching on what not to say to cops at the border.
... I guess that answers that!
Do you mind if I ask though, do you feel it's acceptable that one's level of kindness is all it takes to change whether a State bans someone from the country for 10 years, or, allows them in after grilling them a bit?