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

The White House on Tuesday brushed off former Vice President Joe BidenJoe BidenGOP report on COVID-19 origins homes in on lab leak theory READ: The .2 trillion Infrastructure Investment and Jobs Act Senators introduce bipartisan infrastructure bill in rare Sunday session MORE’s plan to call President TrumpDonald TrumpSenators introduce bipartisan infrastructure bill in rare Sunday session Gosar's siblings pen op-ed urging for his resignation: 'You are immune to shame' Sunday shows - Delta variant, infrastructure dominate 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 SandersTrump expected to resume rallies in June Andrew Giuliani planning run for New York governor Trump appears at Sarah Huckabee Sanders campaign event 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.