Why fracking is in Trump’s closing argument

One of President Trump’s big closing arguments is all about fracking, and there’s a good reason why: He thinks it can deliver him the voters he needs to win Pennsylvania, potentially the pivotal state in this election.

Trump has been building up his pro-fracking argument for weeks, intensifying the push after his Democratic rival Joe Biden said during the final presidential debate he would “transition from” the oil industry as part of his climate plans.

This weekend, Trump sought to seal the deal. On Saturday, he signed a presidential memorandum...