Although LG Pay was supposed to reach the US back in June, it still needs to get there. However, LG has just registered the LG Pay Quick trademark in South Korea, Europe, and the US. There might not be a launch date to talk about yet, but it seems that everything is finally moving in the right direction.
https://www.notebookcheck.net/LG-Pay-Quick-coming-to-South-Korea-Europe-and-the-US.347636.0.html