By the way, I'd also love to move to San Fransisco area. Let's say as a foreigner to the U.S from a Visa Waiver country, is it possible to move to San Fransisco

By the way, I'd also love to move to San Fransisco area. Let's say as a foreigner to the U.S from a Visa Waiver country, is it possible to move to San Fransisco, hire a home office and just live and work on internet stuff? Or is that illegal? What about if I left trhe country every 3 months and came back?