The Google Fusion Tables Objective-C SDK by Google helps to access the JSON APIs. It is recommended to use iOS 3 or later and Mac OS X 10.5 and later. Contents include introduction and example applications. Support available in Google discussion group at https://groups.google.com/forum/#!forum/google-api-objectivec-client
If there is one thing governments do exceedingly well, it's collect data. What they don’t do as well is make that data available in a way that is particularly useful. Looking to change that dynamic, Splunk has begun working with the White House on a Regulations.gov initiative to make it easier to mine the trove of government data.