WASHINGTON (AP) – President Donald Trump has wrapped up the first of three campaign rallies in Pennsylvania, where he told supporters that he wanted to discuss an issue of “existential importance” as he focuses on former Vice President Joe Biden’s policies on energy. Pennsylvania is the second leading producer of natural gas in the country behind Texas. Trump claims that Biden would “abolish the entire U.S. oil industry.” Trump says that means no fracking and no jobs for Pennsylvania families. He is seizing on Biden’s comments in last week’s debate that he would “transition away from the oil industry.” But Biden sought to clarify later that he was talking about ending federal subsidies for oil companies.