Apple’s CEO called Texas Gov. Greg Abbott after law passed requiring app stores to verify user ages.

President Trump threatened tariffs on Apple iPhones in an effort to boost domestic production. Analysts said manufacturing the phones in the U.S. would increase costs significantly.

Apple Inc. has become a frequent target for attacks by President Donald Trump, a factor that has held the stock back as other big tech companies have rebounded over the past month.

Apple may find it hard to make iPhones in the U.S. because it’s expensive, and the U.S. doesn’t have enough skilled workers. The company depends heavily on suppliers in China and India, where most of its production is already set up.

CEO Tim Cook met with President Trump at the White House on Tuesday, Politico reported. The 64-year-old Cook was seen going through security, the news outlet added, citing a person familiar with the matter.