Travel from China to the U.S. fell 5.7% in 2018 to 2.9 million visitors, according to the National Travel and Tourism Office, which collects data from U.S. Customs forms.

Friction between the U.S. and China is one reason for the slowdown. Another is China's U.S. travel warning last summer, telling its citizens to beware of shootings, robberies and high costs for medical care.