First local activists sported pink umbrellas on the warm, sunny day and spelled out messages written on their white tee-shirts as they posed in front of the Trump National clubhouse.
Trump was in attendance at the event that took place Sunday at his golf course in Bedminster, N.J. The president wore a red "Make America Great Again" hat and waved at the crowd.
There had been calls for moving the tournament, which was awarded to Trump National in 2012 long before he officially entered politics, by women's groups angered by his campaign rhetoric and behavior they found to be misogynistic.
For their initial visit on the second day of the golf championship, Melania kept things low-key on arrival with a form-fitting, long-sleeved white shirt and high-waisted navy pants with a caramel belt.
According to NJ.com, protesters there "decried the decision by the Ladies Professional Golf Association and the U.S. Golf Association to stage the showcase event at the president's golf club in light of his past comments and behavior toward women".
"We're not doing anything that would disrupt the play", Jim Girvan, a member of We the People, said. However, after seeing they might cause a distraction for the golfers, the protesters rerouted to a concession stand up the road.
Trump, whose course was named to host the 72nd edition of the event in 2012, long before the real estate magnate and reality TV star entered politics, arrived on Friday to become the first sitting USA president to attend the championship.
"It's not ideal, but it's more important to be able to look the president in the eye and know that we're not afraid of him", UltraViolet's Melissa Byrne said.
"We're here because it is not normal for the president of the United States to also be the head of a giant corporation and profit off his business entities", said one SOMA member, who wanted to stay anonymous.