How would you like it if the Queen came to American and thought "To hell with the laws of the US. I'll do what the **** I want. I'm the Queen" and whereas other drivers had to pay a toll road she just dodged paying it.
Politicians may be above the law in American, but they aren't in Britain. When Obama comes to Britain he abides by our laws, whether you like it or not.
The old cow doesn't pay road tolls in the US or Canada. She is also exempt from prosecution on her visits. It is a courtesy extended to heads of state and their envoys. In fact when the stupid old b*tch comes to Canada the taxpayers here pick up the tab for everything.