ProPublica

October 3, 2012 - Indiana Republican Steve Buyer, who fought tobacco regulation while in the House, is now representing the North Carolina-based tobacco giant, which has been aggressively marketing smokeless tobacco products in the face of declining U.S. cigarette consumption rates.

September 24, 2012 - As the boom in oil and gas drilling sends a surge of waste into underground injection wells, safeguards for disposing of these materials are sometimes being ignored or circumvented.

September 5, 2012 - Separate federal panels struck down two Texas voting provisions. We look at examples of discrimination they found.

August 15, 2012 - Sen. Lindsey Graham (R-S.C.), Rep. Phil Gingrey (R-Ga.), House Aerospace Caucus Co-Chair Rep. Pete Olson (R-Texas), Virginia Gov. Bob McDonnell (R) and Republican presidential candidate Mitt Romney are among those citing an inflated figure for military budget cuts slated to take effect next year.

July 24, 2012 - More than 30 states have enacted some version of voter ID law in recent years. How much do these laws change voting rules and what impact could they have on the general election?

June 21, 2012 - From private prisons to immigration detention, we break down the numbers and companies in the industry.

June 11, 2012 - Trayvon Martin's is far from the only shooting in which the controversial law has been at issue, as shown by other incidents in places including Texas, Louisiana and Florida.