WASHINGTON — President Donald Trump on Sunday said he would be announcing the tariff rate on imported semiconductors over the next week, adding that there would be flexibility with some companies in the sector.

The president’s pledge means that the exclusion of smartphones and computers from his reciprocal tariffs on China likely will be short-lived as Trump looks to reset trade in the semiconductor sector.

“We wanted to uncomplicate it from a lot of other companies, because we want to…