Every year, business professionals in the sport shooting and hunting industries, plus law enforcement and military agencies, come from around the world to meet at the SHOT Show, conduct business and discuss partnerships that foster international commerce.
Please note that the time to receive a Visa or ESTA approval is VERY long. Begin the process now to ensure your ability to enter the United States. If you need a letter inviting you to the SHOT Show, please contact Visa@ShotShow.org.
https://travel.state.gov/content/travel/en/us-visas/tourism-visit/visa-waiver-program.html