Kennedy, an 81-year-old Ronald Reagan appointee, has been the court's pivotal vote for the last decade

The 5-4 decision overturns a 1977 Supreme Court ruling that had let public-sector unions collect so-called agency fees from non-members to help cover the cost of collective bargaining

The latest decision applies directly to workers' wage-and-hour claims, and its reasoning might let employers avoid class action job-discrimination suits.

In a case that could affect the rights of as many as 25 million employees, Justice Anthony Kennedy, often the courts swing vote, suggested Monday through his questions that he would side with employers.

At issue is whether employers can enforce promises they extract from workers to pursue grievances as individual arbitration cases, rather than as group lawsuits in court.

The Supreme Court has ruled that the California Public Employees Retirement System took too long to file its lawsuit stemming from the 2008 collapse of Lehman Brothers.

When questioned what he would've done if President Trump asked him to overturn Roe v. Wade, Supreme Court nominee Neil Gorsuch said, 'I would have walked out the door.'

President Trump nominated Neil Gorsuch, a Colorado judge, to fill Scalia's spot on the Supreme Court. Mitch McConnell says Gorsuch will be confirmed, but it will be a battle as Democrats try to halt Gorsuch's appointment.