Transcript for Trump lashes out at Sen. Elizabeth Warren, George H.W. Bush

Prent trump I spe weekend making the final sion on a supreme court nominee. At a rally in Montana, he told supporters his pick Wille extremely ppy. He was feisty taking at the me tooement and a for president's Chy while praising Vladimir Putin. Here'sabc's chief white house correspondent, Jon Kar Repr: It was a most unusual speech for a president the United States, first lavishing praise O American versary. You know, pdent Putin is kgb and this and that. You know what? Putin is F he's fine.weall fine. Or and for most of T rest of the speech lashing out at just about ybody else, even 94-yeld former reblican president George. And his sn meant to promote voluntem. Thous points oflight. Never quite got that one. Tell is THA Reporter: And just days before he meets with the nato allies, this- You have to start payinour bills. We're the schmucks paying for the whole thing. Eporter: And H added a twist on his target. Senator Elizabeth Warren, once said witho proof to have native-amen heritage. I promise I'll D this. You reer the television for $2? N your here. Reporter: Ahen he compounded H attacn senator warreny mocking the too vement. E will T that little kid andsay, well, we have to do it gently because we're in the me too generation. We have to be very LE, and we will very G take that kind we willlowly toss it, hoping I doesn't hit her and jure her arm. Reporter: War hit back on Twitter. Hey, Donald Trump, while obsess over my nes, your administon is conducting DNA tests on little kids because you ripped themheir mamas you are too incompetent T reunite . And the president with big weekend ahead at his better estate on supreme cou decision, Jon. Rter: He will be having er tonight, Tom, with vice president pence out th at bedminstererly talking about his pick that I mold he make over the weekend. Is also G to be taking calls key outside ars and key members of the se, but Tom, the big announcement will come primetime on Monday, T white house, if it was last time, it Ed to be a surprise when the president walks in with his pick from supreme court. We'll still Mon ahe tweets and everything he says over the weekend.all right,jon. Thanks so much. We'll carry thepresident's supreme court announcemente Mo night at 8:00 P.M. Eastern with full team coverage.

This transcript has been automatically generated and may not be 100% accurate.