07/14/2017 18:53 EDT | Updated 07/16/2017 18:04 EDT

Feng leads as Trump visit causes a stir at U.S. Women's Open

Shanshan Feng maintained the lead halfway through the second round of a U.S. Women's Open that got its first visit from a sitting president.

Fresh from a Bastille Day celebration in Paris, President Donald Trump pulled into his Trump National Golf Club around 3:40 p.m. Friday and headed toward his residence on the property, waving from his motorcade as it rolled past the clubhouse.

His arrival caused a temporary delay for players trying to go from hole No. 9 to No. 10, and from No. 18 to No. 1. It was a minor inconvenience in a week where the USGA has been criticized for holding its biggest event at Trump's course in the wake of his comments about women.

Only three sitting presidents have attended USGA events with Warren G. Harding (1921) and Bill Clinton (1997) going to the U.S. Open.

The Republican president acknowledged crowds near the 15th green Friday. His son Eric Trump stood by his side.

Trump waved, pointed and gave a thumbs-up, prompting squeals from a group of schoolgirls.

The crowds were asked to keep the commotion down as golfers Lexi Thompson, Brooke Henderson and Stacy Lewis approached the 15th green.

Trump's visit during the weekend tournament poses a security challenge because his residence is on the course, where fans and players pass by throughout the day. The tournament's director says of Trump's visit: "we're ready."

The biggest problem for the tournament has been the weather. The first round Thursday was delayed for more than two hours by severe weather and 39 players had to return early Friday morning to finish.

Feng opened with a 6-under 66 and had a one-shot lead when the round was over. The 27-year-old from China was still a shot in front after playing her first nine in the second round in 1 under.

Jeongeun Lee of South Korea shot her second straight 69 and was second at 6 under. Lee uses a six after her first name because there are six other South Korean players with the same name.

Amy Yang, who was one shot back after the first round, was at 5 under with 10 holes to play.

Henderson, from Smith Falls, Ont., sits at 3 under after shooting a 1 under 71 in the second round.

Earlier in the day, former winner Michelle Wie withdrew because of a neck injury. She shot a 73 Thursday and stopped on her second hole the next day.