Apple Inc. is pressing the White House for approval to purchase memory chips from a blacklisted Chinese company as it grapples to rein in chip costs, the Financial Times reported on Saturday. The US tech giant has been lobbying officials in the commerce department and other parts of the Trump administration for a green light to buy chips from ChangXin Memory Technologies Inc., which is on the Pentagon’s 1260H list of companies with alleged connections to the Chinese military, the newspaper repor...