I’ve crossed the border at Derby Line,VT a few times in the last year or so.Driving south on I-91 after having done so I’ve seen Border Patrol vehicles a few times.Never been stopped by one however.
It doesn’t take the newbie BP agents long to discover that VT has no gun laws to speak of; once they learn everybody’s armed up in the Northeast Kingdom, they tend to stop acting like asshats with a badge.