DES MOINES, Iowa – Gov. Christie was saying that the federal Environmental Protection agency was engaged in "overreach" with plans to regulate pollution of groundwater by agricultural chemicals when a heckler stood up and began shouting.

"I'm from New Jersey also!" Joe Mangino, of Beach Haven, yelled as he stood up. He unfurled a banner calling on Christie to finish the job of Sandy recovery, noting he as had to move his family three times since 2012 and his home still is not restored.

"I will not shut up," Mangino said, as Des Moines Police officers closed on his position and began escorting him out. This wa a reference of course to Christie's famous command to another Sandy protestor on the boardwalk in Belmar at an event last October.

He was joined by Lisa Stephens, of Little Egg Harbor, N.J., who held up a sign saying, "Thousands of families still not home after Sandy." They were in Iowa at an agricultural-issues forum with Republican presidential candidates at the state fairgrounds here; a press release sent after they were hustled out by police said they were activists with the New Jersey Organizing Project.

Christie remained calm. "I'm glad to see New Jersey has come to Iowa," Christie remarked to Bruce Rastetter, the GOP donor and agribusiness magnate who organized the summit and grilled the candidates.

"My people follow me everywhere, Bruce – it's fabulous," Christie said. "I'm magnetic."