U.S. President Donald Trump has stopped a foreign investment into a U.S. company. On Sept. 13, Trump blocked Canyon Bridge Capital Partners' proposed purchase of Lattice Semiconductor Corporation for $1.3 billion, the fourth time a U.S. president has done so. The reason? The trail of Canyon Bridge Capital Partners' financial backing leads directly to the China Reform Fund Management Co., meaning the fund has substantial backing from the Chinese state. By blocking the purchase, Trump is making clear his opposition to Chinese state-led investment in strategic sectors. Canyon Bridge Capital Partners' attempted takeover faced intense scrutiny since it was announced in November 2016. The deal was filed three times with the Committee on Foreign Investment in the United States (CFIUS), the interagency committee that reviews potential purchases of U.S. companies by overseas entities. Canyon Bridge Capital Partners made an appeal to Trump to overrule CFIUS.