DES MOINES, Iowa (AP) — The latest from the presidential candidates as they meet and greet voters on the last day of the Iowa State Fair. All times are local.

12:30 p.m.

Louisiana Gov. Bobby Jindal wants to go farther than most in cracking down on so-called sanctuary cities that shield immigrants in the country illegally from federal authorities.

The Republican presidential candidate says the political leaders of such cities should themselves face criminal penalties. Says Jindal: "Let's lock them up."

Jindal made the comment Saturday in an appearance on the Iowa State Fair's political soapbox, a common stop for presidential candidates.

Jindal has been stuck toward the bottom of the polls and is struggling to rise. He touted his own immigrant background but emphasized that his parents came to the United States legally. Pro-immigrant protesters were on hand for Jindal's appearance and an earlier one by New Jersey Gov. Chris Christie, chanting, "We are America."

11:30 a.m.

Three protesters stormed the stage as New Jersey Gov. Chris Christie spoke at the Iowa State Fair's political soapbox. They were protesting Christie's veto of a bill that would have banned the use of pig gestation crates, a technique for raising pork that some consider cruel.

State troopers pulled the protesters off the stage but not before one man shouted "Animals want to live!"

Christie said that the disruption made him feel like he was back in New Jersey. He also defended his veto of the bill and thanked protesters for giving him the chance to say so.

It was part of a wide-ranging 20-minute question-and-answer session by Christie that he launched into without delivering prepared remarks. He parried questions on President Barack Obama's Iran nuclear deal, calling it a huge mistake, and touted New Jersey's status as third in the nation in use of solar power.

Throughout his appearance pro-immigrant protesters could be heard chanting in favor of citizenship.

10:15 a.m.

New Jersey Gov. Chris Christie has a marathon day planned at the Iowa State Fair on Saturday. He'll stop by the political soapbox, visit the Iowa Pork Producers tent and stroll the fairgrounds with Republican Gov. Terry Branstad.

Christie has spent less time in the leadoff caucus state than many other 2016 hopefuls. He's focused his attention on early voting New Hampshire.

Christie's presidential aspirations have drawn scrutiny in his home state. On Friday, a trio of liberal-leaning advocacy groups sued Christie for using taxpayer dollars to pay for his security detail's travel expenses as he campaigns across the country.

9:55 a.m.

Louisiana Gov. Bobby Jindal has been campaigning heavily in Iowa as he seeks the Republican presidential nomination. On Saturday he plans to engage voters from the political soapbox, a common stop for presidential candidates at the Iowa State Fair. Candidates can deliver remarks and take questions from fairgoers. Jindal is also to visit the Iowa Pork Producers tent and the Farm Bureau booth.