The top Democrat in the U.S. Senate called on President Donald Trump on Tuesday to block some Chinese investments in the United States to pressure China "to help rein in North Korea's threatening and destabilizing behavior."

In a letter to Trump, Senate Democratic leader Chuck Schumer urged him to use his authority through the Committee on Foreign Investment in the United States, or CFIUS, to pressure Beijing by suspending approval of "all mergers and acquisitions in the U.S. by Chinese entities."

Schumer's request comes amid concern about North Korea, which fired a missile Friday that experts said was capable of hitting Los Angeles. Trump has repeatedly urged China to rein in its ally North Korea, and Schumer agreed.