Brent Harger of Washoe County, Nev., says he has always voted, but until this year, he'd never really gotten involved in politics.

"I've always been told my voice means nothing. I don't believe that," Harger says. "And there's a lot of people that are scared to even say anything today because they don't think their voice means anything."

Jin Park remembers where he was when Donald Trump announced his presidential bid in June, 2015. He was alone in his Harvard dorm room and watching Trump on TV.

"When Mexico sends its people, they're not sending their best," Trump told the crowd at New York's Trump Tower, "They're bringing drugs. They're bringing crime. They're rapists. And some, I assume, are good people."

Then he proposed a wall along the United States border with Mexico.

Federal prosecutors will charge Maricopa County Sheriff Joe Arpaio with criminal contempt of court for violating a judge's order to stop immigration patrols that led to a court finding of racial profiling.

The controversial sheriff is expected to be officially charged on Wednesday. If he is convicted of misdemeanor contempt, the 84-year-old Arpaio could face up to six months in jail. The court set a tentative trial date of Dec. 6.

A federal appeals court panel in Seattle has ruled that immigrant children under the threat of deportation may not sue the government for legal representation as part of a class action. The ruling is a significant setback for the legal rights of immigrant minors.

More than 850 people were accidentally granted U.S. citizenship despite being from countries with a history of immigration fraud or that raised national security concerns.

All 858 people had been previously ordered removed from the country. The Department of Homeland Security's Office of Inspector General says bad fingerprint records are to blame.

NPR's Brian Naylor reports:

Hours before he is slated to make a major policy speech on immigration Wednesday in Phoenix, Donald Trump is making a bold move — he will be meeting with Mexico's president.

He tweeted the news late Tuesday night:

"I have accepted the invitation of President Enrique Peña Nieto, of Mexico, and look very much forward to meeting him tomorrow."

Donald Trump will give a speech Wednesday outlining his immigration stance. Given the last week of news coverage, he could have some serious explaining to do.

An immigration policy centered around extreme positions — mass deportation of 11 million immigrants in the country illegally, plus building a wall along the U.S.-Mexico border — initially helped Trump stand out in the massive Republican primary field.

Immigration has been a galvanizing issue in Donald Trump's campaign from the beginning.

As part of a lawsuit against U.S. Customs and Border Protection, new images from surveillance video have been released to the public that show detained immigrants crowded into cramped concrete holding cells in Arizona.

Republican presidential hopeful Donald Trump said Monday it's time to "chart a new course" in the battle against "radical Islamic terrorism," though much of what he proposed is similar to the course already set by President Obama.