What to know about the battle over lawsuits alleging that Roundup weedkiller can cause cancer

A new Kentucky law could shield agrochemical maker Bayer from lawsuits claiming it failed to warn that Roundup weedkiller could cause cancer. Kentucky lawmakers overrode a veto by Democratic Gov. Andy Beshear to enact the law Wednesday. It's the third state to do so, following North Dakota and Georgia. This comes several weeks before the U.S. Supreme Court is to hear arguments in a case that could give Bayer a nationwide shield against failure-to-warn lawsuits. Meanwhile, Bayer also is seeking approval of a proposed $7.25 billion settlement in Missouri that could resolve thousands of claims about its Roundup weedkiller.