Where have all the tourists gone? It's a question that many concerned industry insiders are asking in 2019. The United States' share of global long-haul travel has been sliding throughout the last four years.

The American economy stands to lose $180 billion in spending from international visitors if the downward trend continues until 2022. What's more, 41 million visitors will be lost. The loss of all of those visitors will hurt workers in all areas of the travel industry. As many as 266,000 jobs related to travel could actually disappear.

What's the reason behind the decline in inbound travelers coming to the United States? There are a few factors at play right now. One factor is the strength of the dollar. A strong dollar means that travelers from other countries have less spending power when they arrive. That could turn off some travelers. Another factor is the high level of competition from other parts of the world. The simple truth is that there are many tourism spots all around the globe that are very desirable right now.

Additionally, an increase in the number of budget carriers flying in places like Asia means that many travelers are being lured away. Some insiders are speculating that current events and bad publicity from the Trump administration are keeping travelers away. However, there isn't much concrete evidence to support that theory at the moment. It is possible that recent changes in visa policies have caused some travelers to feel confused about how and when to visit the United States.

Scott Dylan is a contributing writer at GET.com and has been to (almost) every country in North, Central and South America with nothing more than a backpack, a laptop and the desire to explore. He speaks Spanish fluently and has logged enough time in planes, trains, rideshares, buses, taxis and rickshaws to know how to rack up rewards and points to get anywhere his heart desires for pennies on the dollar. Email: scott.dylan@get.com.