Hey 
please follow this thread to provide all the necessary data for troubleshooting.
Allow me to offer a personal opinion: your employer has ways and means to find out whether you are in the States or not. In the long run, it only helps if you are open & honest with him.
If you have company devices, it would be clear which country you are in, any way - regardless of which VPN is active. The protection is a bit better for private devices, but you could still find out if you wanted to.