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Congress has reintroduced a piece of legislation known as "Kate's Law," which targets undocumented immigrants who illegally return to the U.S. after being deported.

Kate's Law is named after Kate Steinle, who was gunned down in July 2015 in the so-called sanctuary city of San Francisco by Juan Francisco Lopez-Sanchez, who authorities said had re-entered the country after being deported.

The law would impose a minimum five-year federal prison sentence on those who illegally return after deportation. 

Fox News anchor and attorney Gregg Jarrett joined "Happening Now" Monday to discuss this legislation.

Sen. Ted Cruz (R-TX) and U.S. Rep. Steve King (R-IA) introduced the bill last week. Kate's Law passed last year in the House of Representatives but was filibustered by Senate Democrats.

"This would be an automatic five-year mandatory minimum in federal hard lockup. That is a serious deterrent. ... When somebody stays in another country because they don't want to do hard time here, they're not going to be committing crimes here," Jarrett said.

One of the arguments against the bill is that the U.S. Sentencing Commission estimates it would add 57,000 people to federal prisons at a cost of up to $2 billion annually.

Watch the segment above, and tell us what you think in the comments section.

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