We never had any influence or control. The EU parliament is a sham. DC begged them for a few concessions in order to head off a referendum and they told him to F Off.
Americans, imagine you joined a trading group with most of North, central and south America. A few decades later it has a flag, anthem and proposing and army. It is dictating many of your laws and financial policies including an incredible number of petty rules. It demands open borders within the group and directs immigration from outside.
It openly states that its aim is total political Union. You are given an opportunity to leave but it will cost you in the short to medium term. What do you decide?