After touring the flood zone in central Texas, President Donald Trump is taking part in a roundtable event with first responders and local officials at the Hill Country Youth Event Center.

"The first lady and I are here in Texas to express the love and support and the anguish of our entire nation in the aftermath of this really horrific and deadly flood. Nobody has any idea how and why a thing like this could happen," Trump said as he delivered opening remarks.

"We mourn for every single life that was swept away in the flood, and we pray for the families that are left behind. It's amazing, the incredible spirit from those families," he said.

Trump went on to thank first responders who jumped in to respond immediately and those who are assisting in the search for those still missing.

"The people that are doing it are unbelievable people that you couldn't get better people than this," Trump said.

First lady Melania Trump also delivered remarks while in Texas after meeting with families affected by the devastating floods.

"My deepest sympathy to all of the parents who lost beautiful young souls; deepest sympathy from all of us to the community and everyone who lost a loved one. We are grieving with you," she said.

The first lady said they hugged and held hands with families as they told their stories, and she pointed to a bracelet she said she received from young girls in honor of the lives lost at the camp.

"So we are here to honor them, also to give the support, help. And I will be back, I promised to them," she said.

President Donald Trump is on the ground in central Texas to witness the destruction firsthand from last week's catastrophic flash floods.

In Kerr County, Trump was greeted by Gov. Greg Abbott, who on Friday announced the federal government updated Trump's disaster declaration to include more counties. Abbott said the move "will provide critical assistance to Texans and communities impacted by the devastating flooding."

Trump is being joined on his trip by Ted Cruz and John Cornyn, the state's two Republican senators.

ABC News Senior Political Correspondent Rachel Scott asked President Donald Trump on Friday whether he'd consider any exemptions for USMCA-compliant or other goods in the tariffs on Canada.

"We're going to see," Trump said. When it was set yesterday, they called. I think it was fairly well received. It's what we need, so we'll see what happens."

When asked what his message was to other countries ahead of the tariff negotiation end date, Trump said "just keep working."

"We've been taken advantage of for many, many years by countries folks, both friends and foe, and frankly, the friends have been worse than the most in many cases. So, I would say, just keep working. It's all going to work out," he said.