Three Chinese spy balloons entered the US during the Trump administration, but they were never shot down or publicly disclosed.

In reporting the latest of the Chinese balloon shot down off the coast of South Carolina on Saturday, The US Department of Defense said three other of these crafts 'briefly transited the continental United States at least three times during the prior administration.'

The revelation startled Mark Esper, the former Secretary of Defense, and comes as Trump and other Republicans claimed he would have shot down the balloon while calling on Joe Biden to resign over the stalled attack on the craft.

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