Collect a U. S. salary while shipping the actual work to a less expensive worker elsewhere. Just like companies do, only on an individual basis. I believe it has actually been done (then the person got caught and fired, IIRC).
> "As it turns out, Bob had simply outsourced his own job to a Chinese consulting firm. Bob spent less than one-fifth of his six-figure salary for a Chinese firm to do his job for him."