Congress and the Politics of Problem Solving by John Wilkerson and Scott Adler (University of Colorado) was recently published by Cambridge University Press,
What Congress does behind the scenes is very different from how Congress is presented in the media. This book highlights the important governing responsibilities of Congress, and details the important processes the institution has put in place in order to fulfill those responsibilities.
An interview about the book can be found here
In keeping with the latest trends, they also have a blog.