U.S., June 6 -- As Donald Trump imposes a new travel ban, you may be interested in knowing what happened when he first introduced a travel ban at the end of January 2017.

Trump's first travel ban was notably self-destructive and counterproductive because it alienated visitors from countries that were not included in the ban.

The term "Trump Slump" was coined in a press release by a UK travel and tourism research company, highlighting the effect and showing how broader international tourism to the U.S. significantly suffered as a result.

The first ban, introduced on January 27, 2017, immediately led to an 80% drop in bookings from the targeted nations-Iraq, Syria, Iran, Libya, Somalia, Sudan, and Yemen-and caused a widespread slump of 6...