WASHINGTON (CNN) -- The former head of the IRS said Tuesday that he was aware of some aspects of his agency's targeting of conservative groups in the spring of 2012, and took what he called the correct action of ensuring the situation would be independently reviewed.

WASHINGTON (CNN) -- A former top Justice Department official in Arizona leaked an internal memo from a federal agent who had criticized the politically charged "Fast and Furious" gun trafficking operation, a government report found.

(CNN) -- At least 24 people -- including nine children -- were killed when a massive tornado struck an area outside Oklahoma City on Monday afternoon, officials said.

ATLANTA (CNN) -- Past, present and future came together on a thunderstorm-filled Sunday, as President Barack Obama received an honorary doctorate and gave the commencement speech at historically black, all-male Morehouse College, where the Rev. Martin Luther King and many other prominent African-Americans spent their formative years.

NEW YORK (CNNMoney) -- Yahoo announced a $1.1 billion deal for blogging site Tumblr early Monday, and said it "promises not to screw it up."

WASHINGTON (CNN) -- The national battle over guns is headed to the states in a major way.

WASHINGTON (CNN) -- A dispute over public prayers at town board meetings will be taken up by the Supreme Court in coming months, another contentious case over the intersection of faith and the public arena.

The first congressional hearing on IRS targeting of conservative groups began Friday with the House Ways and Means Committee looking at what it called political discrimination.
However, partisan politics became evident early when the top Republican and Democrat on the committee differed on the underlying purpose of the hearing.

Federal authorities are investigating threatening letters allegedly containing deadly ricin in Spokane, Washington, the FBI said Thursday

Investigators have not ruled out an intentional fire being behind explosions at a fertilizer plant in the small town of West that left 15 people dead, the Texas fire marshal said Thursday.