Ohio Gov. John Kasich defended his support for free trade Sunday, just days ahead of a critical primary for the Republican presidential candidate in his home state. Mr. Kasich’s support for the North American Free Trade Agreement and Trans-Pacific Partnership trade deals has made him a target of Donald Trump, the national frontrunner in the race for the GOP presidential nomination. “I’ve always been a fair trader and a free trader at the same time,” Mr. Kasich said on CBS’s Face the Nation. He added that “38 million Americans have jobs that are connected to trade. So we do want...