I'm planning a new TL with a POD either just before or during the American Civil War. Anywho, by the late 1890s everyone and their brother is taking a leased territory in China as per-OTL. Only ITL there is no John Hay nor Open Door Notes. ITL the Americans are more pragmatic than idealistic and decide if you can't beat the Europeans, join them. Where would the idea American Concession Territory in China be. I'm looking at something like British Hong Kong or the German Kiautschou Bay concession, or the French Guangzhouwan.
A Concessions in Tianjin will follow the ITL Boxer Rebellion. So Tianjin is out. But what are you're thoughts on the subject.