Free speech rights are a stretch here. I wonder if you could make a viable case for the 3rd amendment though (to my knowledge it has never been done).<p>Strictly interpreted, the 3rd amendment prevents the government from being able to force homeowners to quarter soldiers. If you think about the real intent of the bill though, it's obvious that the mindset is "you are free to use your own house without government interference."<p>Realize that at the time, HUGE numbers of homeowners informally had a room or two for boarders to supplement their income. It would have been considered ridiculous at the time for the government to say you couldn't lend a room out for money, which is probably why this interpretation was not formally codified.<p>It's a stretch, but amendments have been interpreted in more creative ways to accomplish personal-freedom goals (think, right to privacy -- interpreted as an implied constitutional right, but not mentioned anywhere).