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

The White House on Tuesday brushed off former Vice President Joe BidenJoe BidenTop adviser on Sanders: 'He's always been underestimated' 'The Simpsons' pokes fun at Trump's feud with 'the squad' 'Forever war' slogans short-circuit the scrutiny required of national security choices MORE’s plan to call President TrumpDonald John Trump Former US ambassador: 'Denmark is not a big fan of Donald Trump and his politics' Senate Democrats push for arms control language in defense policy bill Detroit county sheriff endorses Booker for president 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 SandersApril Ryan's bodyguard issued summons over alleged assault of local journalist Sarah Sanders: Democrats should 'quit lying and do their jobs' Biden pledges return to daily press briefings as president 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.