Yeah we do, and so does Canada. In fact the largest great white ever caught was pulled from the Atlantic off Prince Edward Island, Canada:
Recently I read a great article about North Atlantic sharks by Peter Benchley.
He states that from May to October great whites are regularly spotted in the Atlantic in the coastal area spanning from the mouth of the St. Lawrence river in Quebec to Cape May in New Jersey with the highest number of sightings off Nova Scotia and Maine.
Jaws notwithstanding, there were only two fatal great white attacks recorded in North America during the last century: one in New Jersey and one in Nova Scotia. This is largely due to the fact that the waters great whites prefer are too cold for all but the hardiest human swimmers.
According to the author what makes this species so dangerous is its habit of "bite first and ask questions later". Most sharks won't eat anything they aren't familiar with but unlike these the great white, which is a primitive species, won't investigate a potential source of food by circling and nudging before sampling it, it will bite and swallow just about anything, throwing it up later if it proves inedible. Because of this behavior two of the main causes of mortality among great whites are choking from attempting to swallow large objects that then block the gills, and food poisoning.
Apparently the only creature great whites fear and instinctively flee from are killer whales the smallest of which being twice as large as the largest great whites, swims even faster, delivers a more vicious bite, and is very short on patience. Contrary to what some believe killer whales -as well as other dolphins and porpoises- do not attack sharks because they are evil (lol) but because dolphins don't like sharing their food sources.