Yup. It'll save your life. Download the app, and when you land, upload your info into MPC. and you'll skip a FAT part of the line. MPC has its own lane. Not sure why more people don't use it. I assume because they don't know about it.
"After downloading the MPC Application from the Google Play Store or Apple App Store, eligible travelers will be prompted to create a profile with their passport or LPR card information. Upon arrival at eligible Preclearance locations users must select their mode of entry in the application as "Preclearance" before selecting their departing Preclearance Port of Entry. If a traveler is not using preclearance, upon landing in the United States, travelers will select "U.S. airport" as their mode of entry and then select their arrival airport or seaport and terminal. Travelers will then take a self-photo and answer a series of CBP inspection-related questions. Once the traveler submits their transaction through the app, travelers will then bring their physical passport to a CBP officer to finalize their inspection for entry into the United States."
"MPC provides a more efficient in-person inspection between the CBP officer and the traveler. Since the administrative tasks are performed by the traveler prior to the passport control inspection, MPC reduces passport control inspection time and overall wait times."
"I've lived through some terrible things in my life, some of which have actually happened."
Mark Twain