The real problem with the 40,000 people that came from China after the "shut-down" is that most went through no health screening with temperature and questions. None were quarantined. There was no requirement or recommendation that the quarantined for 14 days upon arrival.
Note that if you came from a hotspot where Ebola existed they made people quarantine for several weeks upon arrival in the U.S.
We also had a competent leader back then

