White House: 'Laughable' that Biden would call Trump an 'existential threat'

The White House on Tuesday brushed off former Vice President Joe BidenJoe BidenTrump says he doesn't want NYT in the White House Warren to protest with striking Chicago teachers Schiff punches back after GOP censure resolution fails MORE’s plan to call President TrumpDonald John TrumpTrump says he doesn't want NYT in the White House Veterans group backs lawsuits to halt Trump's use of military funding for border wall Schiff punches back after GOP censure resolution fails MORE an “existential threat to America” as “truly laughable,” previewing how the two men might go after one another during a trip to Iowa.

The 2020 Democratic presidential front-runner plans to deliver a speech to supporters accusing Trump of threatening “our core values,” democratic norms and America’s standing in the world, according to prepared remarks shared with The Hill.

White House press secretary Sarah HuckabeeSarah Elizabeth SandersBill Press: Mulvaney proves need for daily briefings White House correspondent April Ryan to moderate fundraising event for Buttigieg White House press secretary defends lack of daily briefings: Trump 'is the most accessible president in history' MORE Sanders told reporters she is not sure Trump will go after Biden during his appearance in the Hawkeye State, but offered a taste of what the president might say.

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“The idea that he would say that the president poses any type of threat is truly laughable, considering he was part of the administration that allowed Russia to interfere in our election,” she said.

Sanders accused the Obama administration of doing little to check China’s expansion and failing to contain Iran and North Korea’s nuclear programs, saying Biden has “a lot of explaining to do.”

Trump has repeatedly railed against Biden, a sign he views him as a potential threat in the 2020 race even as he and his aides have publicly downplayed the former vice president’s clout.

The two politicians will be in the key battleground state together for the first time in the election cycle.

Biden plans to use his Iowa speech to criticize Trump’s tariff threats toward Mexico and China and failing to address climate change.

Trump is delivering remarks at an ethanol facility and speaking to an Iowa Republican Party dinner.