These sites operate outside the legal purview of federal and US state governments. The first aspect that makes the previously mentioned sites safe is that you don’t have to be worried about breaking any laws. That’s why the best online sports books for US players come with certain safety protocols. If the site is deemed unsafe by one person then the entire sports betting site could go up in flames. The safety of legal online sportsbooks that take US residents is of the utmost importance to those sites. Safety Of Legal Online Sports Betting Sites