Why did the US invade the middle East now..we have?

soo many arabs here in Canada we will eventually become like france or any other country experiencing a culture that will eventually want to take away our Canadian Traditions and culture?? It's the Americans you Decided it's a good thing to help them out like the muslim enjoy their country and deal with their own problems..we did not need anyone to change them and 'liberate' them, they are fine they way they were.