The U.S. Supreme Court is scheduled to hear arguments Tuesday in a case that could have broad implications for the way millions of Americans save for retirement. The court will focus on a narrow issue concerning the statute of limitations in the case, called Tibble v. Edison International. A ruling against Edison could trigger a wave of lawsuits against companies over the way they set up and manage 401(k) retirement accounts and similar plans, according to lawyers not involved with the case.