Alexandria Ocasio-Cortez, a former campaign organizer for Bernie Sanders, pulled off a stunning upset in a New York Democratic congressional primary Tuesday, defeating 10-term incumbent Rep. Joseph Crowley.

The 28-year-old Bronx native, a political newcomer and a member of the Democratic Socialists of America, ran on a Medicare-for-all policy and supports abolishing Immigration and Customs Enforcement (ICE).

Michelle Malkin reacted Wednesday on "Fox & Friends," saying she "questions the sanity" of anyone who wants to abolish ICE, cautioning that the view is becoming more mainstream within the Democratic Party.

'No Borders, No Nations': Occupy ICE Protesters Mobilize, Call for ICE to Be Abolished

'Read a Damn Book': Shapiro Blasts the Latest 'Delusional' Trump-Nazi Comparison From Hollywood

"These are shrieking radicals who oppose any immigration enforcement. ... They don't want borders at all," she said, adding President Trump is "absolutely right" to call out politicians who advocate for open borders. 

Malkin said ICE is needed for "interior enforcement" of immigration laws, especially when people overstay visas, but candidates like Ocasio-Cortez ignore these facts. 

"It was after 9/11 we realized there were upwards of 600,000 deportation absconders within the country, that 40 percent of all the illegal aliens that are here were visa overstayers," she said, adding that ICE makes sure illegal aliens are tracked down. 

She said 20 congressional candidates are now running on a platform of abolishing ICE, with Sen. Kamala Harris (D-Calif.) leading the way. 

Watch the discussion above.

Tucker: The Country Badly Needs the Adults on the Left to 'Rein in the Mob'

'We Need a Floor Vote': AZ Rep Calls for Formal Congressional Censure of Maxine Waters

'She Was Inciting People': DeSantis Says Waters Is the 'Pied Piper for the Unhinged Left'