The U.S. Supreme Court is taking on a case involving liability and seat belts. The nation’s highest court Monday agreed to rule on whether federal safety regulations essentially block product-liability lawsuits against automakers who put lap-only seat belts in their vehicles. http://online.wsj.com/article/SB10001424052748704113504575264301544575656.html?mod=WSJ_newsreel_business# The case in…