Transcript for Trump criticized for commuting Roger Stone’s sentence
Friday night announcement, commuting the three-year sentence of longtime political ally Roger stone, just days before stone was set to report tonight at least one Republican is accusing the president of historic corruption. ABC's Rachel Scott is in Washington. Just a few minutes ago, I had a very gracious call from the president of the United States. Reporter: It was the call Roger stone had been waiting for. He told me that he had decided to use his extraordinary powers of clemency to commute my sentence in what he called a full commutation of my sentence. Reporter: And he says it came in the Nick of time. Friday evening, just days before stone was set to begin his more than three-year prison sentence, the president making his longtime friend and ally a free man. I'm very happy with what I did. Reporter: Stone was convicted in November on seven felony counts brought against him by special counsel Robert Mueller, including five counts of lying to congress, witness tampering, and obstructing the house investigation into Russian meddling in the 2016 election. The 67-year-old so-called dirty trickster, a Republican political operative for decades, even has his personal hero, Richard Nixon, tattooed on his back. And promised to never turn on the president. There is no circumstance whatsoever under which I will bear false witness against the president. Nor will I make up lies to ease the pressure on myself. Reporter: Since taking office, the president has pardoned and commuted the sentences of several controversial figures, like former sheriff Joe arpaio, an early trump supporter who defied a federal order to stop using racial profiling to detain Latinos. Money, money, money, money Reporter: And former Illinois governor rod blagojevich, the one time "Apprentice" contestant who tried to sell Barack Obama's vacant senate seat. Today president trump continued to insist stone was treated unfairly. A claim he's made for months. Roger stone was treated horribly. Roger stone was treated very unfairly. Look at Roger stone. Look at the horrible treatment he's got. He's going to be okay. Reporter: This week, attorney general William Barr told our Pierre Thomas, stone's 40-month sentence was fair. He was prosecuted while I was attorney general. I think the prosecution was righteous. Reporter: But thanks to the president, he will not serve a single day of it behind bars. All right, Rachel Scott joins us now from Washington. Rachel, of course Democrats were quick to pounce on the president for commuting his ally Roger stone's sentence, but also that striking condemnation from a senator in his own party. Reporter: Tom, some of the strongest criticism tonight coming from Republican senator Mitt Romney, who's accusing the president of unprecedented historic corruption. That point also echoed by Democrats who say the president is undermining the rule of law. Tom? Rachel Scott for us. Rachel, we appreciate it.
This transcript has been automatically generated and may not be 100% accurate.