White House Press Secretary Sarah Huckabee Sanders got fact-checked in an unlikely target Sunday morning — during an form on Fox News Sunday.

Sanders assembled host Chris Wallace to talk about the governmental forces shutdown and recited one of President Trump’s favorite lies about immigration, that terrorists are streaming across the southern margin into the United States.

“We know that roughly 4,000 known or suspected gunmen come into our country illegally, and we know that our most vulnerable point of entry is southern margin, ” Sanders said.

“I know the statistic, I didn’t know if you were going to use it, but I learnt up on this, ” Wallace interjected. “Do you know( when) those 4,000 people come “where theyre” captured? Airports .”

” Not always ,” Sanders said, but Wallace insisted.

” Airports. The State Department says there haven’t been any gunmen encountered coming across the southern border ,” he said.

“I studied up on this”: @FoxNewsSunday fact checks @PressSec on terrorism and mete protection: pic.twitter.com/ 2j1edlDbsx

— Matt Shuham (@ mattshuham) January 6, 2019

Sanders answered, “It’s by breath, it’s by land, it’s by sea. It’s all of the above. But one thing that you’re forget is, the most vulnerable point of entry that we have into this country is our southern strip .”

She was interrupted again by a snappy Wallace, who insisted that the 4,000 known or suspected terrorists who have entered the country have not come across the southern frontier and have instead been stopped at airports.

“They’re coming a number of ways, they’re certainly — I’m not disagreeing with you that they’re coming through airports, ” an increasingly flustered Sanders said.

“I’m “re saying that” they come by air by property and by ocean, and the more and more that our border grows susceptible, and the less and less that we spend time and money protecting it the more that we’re going to have an influx — not just of terrorists, but of human traffickers and medicine inflow.”

Sanders illusion Sunday comes as the part government shutdown stretchings into the work of its third week. The shutdown began last-place month after Trump refused to sign a spending greenback that didn’t include funding for a wall on the southern perimeter that he, during the campaign, swore Mexico would pay for.

Nearly 400,000 federal craftsmen are going without settle, tax returns could be delayed, funding for the Supplemental Food Assistance Program( SNAP) is on the verge of running out, and many federal workers are concerned about being able to pay bills and draw rent.

All this, for a wall to keep out “terrorists” who aren’t coming over the southern margin at all.

Read more: thinkprogress.org