FILE PHOTO: Chinese and U.S. flags are set up for a meeting during a visit by U.S. Secretary of Transportation Elaine Chao at China's Ministry of Transport in Beijing, China April 27, 2018. REUTERS/Jason Lee/File Photo

WASHINGTON (Reuters) - The United States plans to lift its designation of China as a currency manipulator on Monday, a person familiar with the decision said, as a high-level Chinese delegation arrives in Washington to sign a trade pact this week.