Former President of Mexico Vicente Fox said that this visit is an opportunistic move and a desperate strategy to improve Trump's sinking poll numbers.
After the meeting Trump will travel from Mexico City to Phoenix, Arizona to give a speech on illegal immigration.
Twitter and Instagram users posted photographs along with the former star of "Two and a Half Men."
Trump, whose mother was Scottish, was greeted by around a dozen protesters at the course waving Mexican flags, rainbow flags for Gay Pride day.
Shirley Manson visits Coyoacán
She visited the craft market and a mezcal store.
President Enrique Peña Nieto traveled to the site of the blast accompanied by federal authorities.
Joselo Lucero, whose brother was killed in the 2008 attack, says Patchogue is the wrong place for Trump to visit. "My community has suffered so much discrimination."
He will discuss a proposed meeting between Latin American oil producers to unify the region in backing an output freeze or other measures to bolster prices.
He was joined by first lady Michelle Obama and daughters Malia and Sasha.
As many as 200,000 Catholics are expected to cross four bridges from El Paso, Texas into Ciudad Juárez, Mexico on Wednesday to see Pope Francis.