Kevin Connor & Matthew Skomarovsky, co-founders of Sunlight-supported LittleSis.org, announced yesterday they are joining forces with The Huffington Post Investigative Fund’s Health Care Investigative Unit on a joint research project. They will be reporting on the congressional lawmakers that receive the most money from health care interest groups. Here’s a list of those lawmakers, as produced by The Huffington Post and Maplight.org. And you can sign up with the investigative unit here.

Also, within the next few weeks, LittleSis will be launching an application programming interface (API) to provide developers and friendly organizations access to their raw data. Anyone interested in previewing the API can register for a key, and you can check out the API’s documentation here.