Earlier that day, Trump said his meeting with Las Vegas doctors and the mass-shooting survivors made him "proud to be American".
The White House statement says Trump "welcomed" Pena Nieto's "expression of thanks" for US help after Mexico's recent quake.
TAMARA KEITH, BYLINE: Hi, Mary Louise.
"Hey, this guy looks tough to me", President Trump said as he entered Gunderson's room after the first lady.
"We are not going to talk about that today".
Surrounded by first responders, a somber looking Trump accompanied with the First Lady consoled the nation. He met behind closed doors. "And we will overcome together as Americans".
Mr Bustos said: "She said "Relax, we shouldn't worry about it".
Speaking to reporters on Tuesday, Trump said he'd be in Las Vegas to "pay our personal respects and condolences to everybody".
Trump said he even invited the survivors to the White House. "That I can tell you". "And they're there for us". How do we do it? "And believe me, I'll be there for them". The rate of people killed by guns in the U.S.is 19.5 times higher than in similar high-income countries around the world, and we have the highest number of school shootings in the world, as well. And they're there for us. A lot of presidents read prepared remarks, but the difference with Trump is his inability to show emotion, empathy, or real feelings about what he is reading.
The President said: 'I just met some of the most fantastic people. It wasn't the same sort of cheerleading that he did yesterday.
The president also plans to meet with first responders later in the day.
As he departed the White House for Puerto Rico, Trump called the Las Vegas gunman "demented" and a "very, very sick individual".
Police officers took cover behind a wall as Paddock fired into the concert crowd.
Just minutes later, two young women came to help him and gave him first aid, wrapping a belt around his left leg while the other woman got some men to help carry him to safety.
And here we see Trump again, saying nothing about getting military-grade weapons away from unsafe civilians. Authorities found several weapons in Paddock's hotel room as per law enforcement officials.