At his one-on-one debate with Bernie Sanders Sunday night, Joe Biden said that if he becomes president, his administration will not deport anyone, no one, under any circumstances, during his first 100 days in office. After that, Biden said, he will only deport those who have committed felonies in the United States.

"In the first 100 days of my administration, no one, no one will be deported at all," Biden said during the debate televised by CNN. "From that point on, the only deportations that will take place are commissions of felonies in the United States of America."

"So to be clear, only felons get deported and everyone else gets to stay?" asked Univision's Ilia Calderon.

"Period, yes," Biden said.

Biden's promise, which he had been making on the stump before the recent pause in campaigning, is consistent with the Democratic Party's move to the left on immigration in the last few years. Various bipartisan proposals in the past would have barred illegal immigrants from staying in the U.S. if they had a felony or three misdemeanor convictions. Now, Biden says that only a felony committed in the U.S., and that would surely mean only a felony conviction, not an arrest, and only after full appeals, would result in the deportation of anyone.

Biden's move occurred in February, as he sought to keep his campaign alive in the Nevada caucuses. In an interview with Univision's Jorge Ramos, the former vice president said the Obama administration was too quick to deport people who were in the U.S. illegally. "There were too many [deportations]," Biden said. "I saw the pain in the eyes of so many people who saw their families being deported. I know what it's like to lose family members. It was painful."

Biden still lost Nevada. Sanders won an impressive 50% of the Latino vote there, to Biden's 17%.

But now, the promises stand. And so do those from Sanders.

For example, on Sunday, Sanders pledged to cut back on interior enforcement of the nation's immigration laws. "What we need to do is to end, and this on Day One, the ICE raids that have been so harmful to many people," he said.

In the bigger picture, the two men agreed on what would be an unprecedented loosening of U.S. immigration enforcement. Both promised to immediately end the Trump administration's practice of making thousands of illegal border crossers wait in Mexico while their asylum claims are considered in the U.S. Both promised to send more immigration judges to the border to decide those claims. And both promised not to detain anyone while those decisions were being made.

"I would immediately, as president, surge to the border," Biden said. "I would end this notion for the first time in history that people seeking asylum have to be in squalor on the other side of the river, and in just a desperate situation. They should be able to come to the United States and have a judgment made as to whether or not they qualify. I would also surge to the border immigration judges to make decisions immediately. And no one, no one would be put in jail while waiting for their hearing."

At that point, Calderon asked Sanders to respond.

"Well, it's kind of what I have been saying throughout the entire campaign," Sanders said.

Finally, both candidates said they would support sanctuary cities that defy federal authorities seeking to enforce immigration law.

"Vice President Biden, you opposed sanctuary cities as a presidential candidate in 2007," Calderon said. "Where do you stand now? Should undocumented immigrants, arrested by local police, be turned over to immigration officials?"

"No," Biden said.

"Senator Sanders?"

"Of course not," Sanders said.