You may have noticed that more commonly we have ADTAs. The “A” stands for an agreement, so those are formal agreements between two governments. In this case we recognize a single China and therefore we don't have a formal government-to-government relationship with the Taiwanese government on the same footing we would with other governments. As a result, we have arrangements rather than agreements, again, signed between the two offices rather than signed by government representatives.
We have a lot of shared interests with Taiwan, in the commercial area but in other areas as well, so over the years we've set up these various arrangements. We've never seen any concern from the Chinese side that these somehow represent a recognition of the Taiwanese government as a formal government, so both the title and the basis on which we set them up allows us to interact with Taiwan as an important economy and a partner in various areas without implying a formal recognition of the government.