Democrats have been misleading the public about pandemic preparedness, while US declared best prepared in the world

Fox News:

The United States was ranked the best-prepared country in the world to handle a pandemic in late 2019 by the Nuclear Threat Initiative (NTI) and the Johns Hopkins Center for Health Security (JHCHS) -- an assessment seemingly at odds with claims by Democrats that the Trump administration left the country vulnerable to the ongoing coronavirus outbreak.

The Global Health Security Index was was "developed with guidance from an international panel of experts from 13 countries, with research by the Economist Intelligence Unit" from 2018 to 2019, The Washington Post reported last year. "More than 100 researchers spent a year collecting and validating publicly available data.”
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President Trump's campaign has argued in recent days that misinformation may be one of the leading causes of that lack of confidence. For example, Trump's team has pointed to claims by presidential contender Joe Biden that "no one on the National Security Council staff was put in charge" of pandemic preparedness, based on a report that in May 2018, then-National Security Adviser John Bolton eliminated the NSC’s Office of Global Health Security and Biodefense in a reorganization effort.

Rear Adm. R. Timothy Ziemer reportedly was ousted as senior director, and no replacement was named. But, FactCheck.org has determined that the matter amounted to a reorganization, and that “some team members [of the NSC pandemic office] were shifted to other groups, and others took over some of [the top official’s] duties.”
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Separately, the Biden team has repeatedly argued that the president once referred to coronavirus as a "hoax." That claim has been refuted by numerous fact-checkers, including the Post's, which found that Trump was clearly referring to Democrats' efforts to blame him for the pandemic, not the virus itself.

Additionally, numerous Democrats, including Biden, have falsely claimed that the president cut the Centers for Disease Control and Prevention (CDC) budget. The Associated Press has noted that those claims "distort" the facts.
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I am not sure Biden has the mental capacity to comprehend the facts at this point.  Otherwise, you would have to say he is being deliberately dishonest.