According to Forbes, the U.S. has hiked the fee to renounce U.S. citizenship 422%, so voting with your feet is becoming more difficult. This is how the government responds to a record number of citizens leaving for greener pastures -- all stick and no carrot.
According to the article, the State Department says that hiking the exit tax is necessitated by the increase in demand on their services and all the extra workload they have to process people who are on their way out. Notice the statist logic: bureaucrats erect hurdles to escaping the system and then demand more money from those forced to clear the hurdles on the grounds that the hurdles are so expensive to maintain.
Hey, if you don't like it, leave, if you can.