After an Arrest at a Black Lives Matter Protest: Deportation Proceedings

“We’ve built the electorate to actually get people in office,” she said. “What does it mean to hold them accountable? We need to maintain pressure to actually push them, not just say, we’re Democrats, we’re better.”

When the Supreme Court upheld DACA last month, Ms. Guerrero arrived at a celebratory news conference with her ankle bracelet visible. Several hours later, Mr. Penzone marked the decision by sending a fund-raising email for his re-election campaign.

“In order to build a stronger community and a better future, we must demand thoughtful and compassionate immigration reform,” he wrote.

“The fight that DACA children are still fighting is absurd,” he added in an interview.

Ms. Guerrero did have other elected officials in her corner. After the Arizona Legislature approved Senate Bill 1070 10 years ago, a massive outcry led to weeks of protests led by immigration activists. A few who have now gone on to elected office, including to the City Council and State Senate, wrote letters, as did dozens of other local leaders, urging immigration officers to release her.

Laura Pastor, a member of the Phoenix City Council, wrote that Ms. Guerrero “exemplifies the values and good moral character that we strive to embody as Americans.”

The letters helped her secure her release. And no criminal charges were ever pursued.

“If Máxima wasn’t Máxima she’s still sitting in a detention,” said Raymond Ybarra Maldonado, her lawyer, who has worked in immigration for decades. “There’s no question her notoriety helped her and helped the others.”

On June 23, Ms. Guerrero was called back to the local immigration office, where officers released her ankle bracelet. Somewhat relieved, but mostly still stunned, she returned to the home she purchased in 2016.