But the effort ran headlong into shifting sentiment at the White House. Trusting his vaunted political instincts, President Trump had been downplaying concerns about the virus and spreading misinformation about it—efforts that were soon amplified by Republican elected officials and right-wing media figures. Worried about the stock market and his reelection prospects, Trump also feared that more testing would only lead to higher case counts and more bad publicity. Meanwhile, Dr. Deborah Birx, the White House's coronavirus response coordinator, was reportedly sharing models with senior staff that optimistically—and erroneously, it would turn out—predicted the virus would soon fade away.

Against that background, the prospect of launching a large-scale national plan was losing favor, said one public health expert in frequent contact with the White House's official coronavirus task force.

Most troubling of all, perhaps, was a sentiment the expert said a member of Kushner's team expressed: that because the virus had hit blue states hardest, a national plan was unnecessary and would not make sense politically. “The political folks believed that because it was going to be relegated to Democratic states, that they could blame those governors, and that would be an effective political strategy,” said the expert.

That logic may have swayed Kushner. “It was very clear that Jared was ultimately the decision maker as to what [plan] was going to come out,” the expert said.

"As far as TikTok is concerned, we're banning them from the United States," Trump said to reporters while aboard Air Force One.

Trump said he could use emergency economic powers or an executive order. It was not immediately clear what such an order would look like and what legal challenges it might face.

"Well, I have that authority," he said.

Cybersecurity experts have said TikTok's potential risk to national security is largely theoretical and that there is no evidence to suggest that TikTok's user data has been compromised by Chinese intelligence.