President Donald Trump said China isn't satisfying the U.S. in ongoing trade talks, telling reporters during a visit to an Apple AAPL, +3.75% plant in Texas that Beijing isn't "stepping up to the level we want." Trump spoke after reports of a potential delay in an interim trade deal between Beijing and Washington roiled U.S. equity markets on Wednesday, with the Dow Jones Industrial Average DJIA, +1.33% off more than 100 points. Trump was touring the facility with Apple Chief Executive Tim Cook and said his administration is "looking at" whether to exempt certain Apple products from China tariffs.