That is the topic of my latest Bloomberg column, here is one excerpt:
The first and perhaps most important effect will be to make Trump’s nationalism seem ordinary, even understated. Hundreds of flights to China have already been canceled, countries are refusing to receive (or deciding to quarantine) Chinese nationals or visitors from China, and China itself is severely limiting travel within the country. Whether or not these prove effective measures, the idea of travel bans and restrictions no longer seems extreme or unconstitutional. Even if voters are confusing normal times with times of pandemic, on this issue Trump’s instincts now seem almost prescient.
When the flight of Americans returning from Wuhan was sent to Alaska last week instead of San Francisco, and subject to quarantine, very few political complaints were heard, including from leading Democrats. There might still be arguments about whether that was a justified violation of civil liberties, but the notion that a pandemic requires the federal government to take such measures, without a congressional vote, is not seriously contested.
That is going to help any incumbent president who believes in the strong exercise of executive power, as does Trump.
There is much more at the link.