RNC Day 3: JD Vance accepts nomination for vice president as Trump watches on

North Dakota Gov. Doug Burgum, a one-time presidential hopeful and a top candidate for Trump's running mate, largely focused on energy during his speech.

"Who will make America energy dominant?" Burgum asked, as the crowd shouted in response, "Trump!"

Burgum said Trump "champions innovation over regulation" and will "make sure that America is selling energy to our allies versus buying it from our adversaries."

During his speech, some attendees could be seen waving signs that said, "American oil from American soil."

East Palestine, Ohio, Mayor Trent Conaway took the stage, praising the first responders who rushed to help after a freight train carrying hazardous materials derailed last year.

He criticized the federal response, claiming the Biden administration "talked and talked, but they delivered little help."

Conaway went after Biden for not visiting the town in the immediate aftermath and praised Trump for coming to the town less than three weeks after the incident.

"I know a thing or two about train wrecks now and let me tell you, that is what the Biden administration has been," he said.

In an exclusive interview with ABC News anchor David Muir in February 2023, Biden said he "made it clear" to officials on the ground that "anything they need, we'll make it available to them."

The comments came after East Palestine's mayor called it a "slap in the face" that Biden traveled to Ukraine while his town felt forgotten in the weeks after the crisis. Biden went to East Palestine a year later.

Republicans have been bashing the Biden administration's immigration policies, arguing that more undocumented immigrants have been entering the country.

Last month, Biden issued an executive action that limits the number of migrants who can claim asylum between ports of entry at the southern U.S. border.

Since then, the number of encounters at the southern border have decreased by more than 50%, according to government data.

The Department of Homeland Security said it removed and returned more than 50,000 individuals to more than 100 countries since the new rule went into effect.

Border Patrol agents made roughly 83,536 migrant apprehensions in between ports of entry at the southern border in June, the lowest since January 2021, according to government data.

On the third night of the convention, more RNC attendees are seen sporting bandages on their ears -- a nod to the one Trump had on his ear that was struck in the assassination attempt during his appearances over the past two nights.

Trump was seen wearing a bandage while walking on the convention stage earlier Wednesday as well. He is expected to appear at the convention later tonight.