Reuters has found that the administration took a month from the time it learned of the outbreak in late December to impose the initial travel restrictions amid furious infighting.

During that time, the National Security Council staff, the state department and other federal agencies argued about everything from how best to screen for sick travelers to the economic impact of any restrictions, according to two government officials familiar with the deliberations.

The NSC staff ultimately proposed aggressive travel restrictions to high-level administration officials – but it took at least a week more for the president to adopt them, one of the government officials said…

Each day that the administration debated the travel measures, roughly 14,000 travelers arrived in the United States from China, according to figures cited by the Trump administration. Among them was a traveler who came from Wuhan to Seattle in mid-January, who turned out to be the first confirmed case in the United States.