From the Wikipedia page: > The frequency initially chosen for Galileo would have made it impossible for the US to block the Galileo signals without also interf

From the Wikipedia page: > The frequency initially chosen for Galileo would have made it impossible for the US to block the Galileo signals without also interfering with its own GPS signals. [...], but they have since reached the compromise that Galileo is to use different frequencies. This allows the blocking or jamming of either GNSS without affecting the other. Interesting