trump plane
Mike Segar/Reuters

The US tourism business is in trouble — and President Trump may be to blame.

America’s share of international tourism has dropped 16% in March, compared to the same month in 2016, according to Foursquare data released Wednesday.

The decline began in October 2016, the month before the presidential election. From October to March, tourism-related traffic has fallen an average of 11% in the US, compared to the previous year. Meanwhile, tourism in the rest of the world has increased 6% year-over-year during the same period.

Foursquare a location intelligence company known for its search and discovery app that tracks user visits to restaurants, bars, parks, hotels, and other sites, as well as its work in analytics, advertising and developer solutions.

Foursquare analysts connected the drop to President Trump’s America first rhetoric and policies that have made some international tourists wary of visiting the US. Foursquare CEO Jeff Glueck notes that residents from the Middle East and Central/South America — regions for which Trump has encouraged stricter immigration and travel policies