"Change of management, change of board, change of everything ... it's up to Mr. Ross, who will make a recommendation to the president," said Kudlow, director of the National Economic Council.

President Donald Trump has talked about easing restrictions on ZTE for flouting U.S. sanctions on trade with Iran as part of wider trade talks with Beijing, prompting backlash from Washington lawmakers who have called the company a security threat.

Kudlow also told Fox Business Network that trade talks with China "are going very well."

U.S. and Chinese negotiators met for a second day on Friday in Washington to try to avert a tariff war and find ways to boost U.S. exports to China.

"The president himself has shown more enthusiasm and optimism about this trade deal than I have ever seen him in the whole discussion going back many, many weeks," Kudlow told the network.

"There is a lot of optimism on the U.S. side that frankly I did not see when we started this a few weeks back," Kudlow said.

He added: "If the talks don’t work, you can expect (Trump) to take some very tough measures on his own."

(The story in corrects the attribution to Fox Business Network, not Fox Business News in the first and fourth paragraphs)

(Reporting by Eric Beech; writing by Eric Walsh; editing by Jonathan Oatis and Leslie Adler)