Customs and Border Patrol announced they chose Glock as their new sidearm. They are carrying H&K P2000 in .40 S&W now, but expected to transition to 9mm Glocks by 2021.
The choices are Glock 26, Glock 19 and Glock 47. Glock 47 appears to be a combination of 19X/45 frame with 19L slide(17 slide for 19 frame)
Edit: According to Soldier Systems Daily, the selection was a close one, but with Glock getting slight edge over SIG in Operator Test and more edge with price.
http://soldiersystems.net/2019/04/15/the-cbp-pistol-program-was-close/
From: Soldier Systems Daily