IPSC US Handgun Championship
The IPSC US Handgun Championship are yearly IPSC level 3 matches held by the United States Practical Shooting Association (USPSA) run under IPSC-rules (contrary to the USPSA Handgun Championship, which is run under USPSA-rules). Sometimes, all of the pistol IPSC nationals are held at the same time, other years, they have been broken up between different ranges.
Source: Wikipedia — IPSC US Handgun Championship (CC BY-SA 4.0)