I still don't understand what that has to do with encryption. Are these two separate policy proposals, one for GPS tracking and one for encryption, that this person is supporting?
Encryption is used to remain private in ones comings and goings and communication.
It’s not the same as gps, but it’s similar. If you can decrypt someone’s communications, you can more easily determine their location.
Think about why do governments want to ban encryption? Because they want to know everything about you all the time. Collecting information on someone such as their location is of the same order.