President Donald Trump said Thursday tariffs of 25% on Mexican and Canadian goods are set to take effect on March 4, while also threatening to impose an additional 10% on Chinese imports on the same date.

Elon Musk said Thursday that Verizon’s efforts to provide a critically needed upgrade to the FAA’s air traffic control system is failing. And he said that it is important that Starlink, a unit of his SpaceX satellite and rocket company, take over.

The U.S. next week will impose an additional 10% tariff on imports from China over its role in the fentanyl trade, the president said.