Analysis of buildings that were severely damaged or destroyed.    

Political coverage over the last week has focused on a series of stories that reflect negatively on the executive branch, but President Obama’s approval ratings have held steady.    

The National Weather Service said on Tuesday that the tornado was a category EF5, the most powerful category of tornado.    

First, the jet stream caused a cold snap by bringing Arctic air farther south than normal, but when it shifted north, it allowed tornado-causing moist air to move into the Midwest    

In states like Oklahoma and Missouri, tornadoes are a seasonal threat, but government regulation and the expense of shelters rankle.    

Leaders of the Tea Party movement hope outrage over the I.R.S. inquiry will rekindle grass-roots activism that in many places went dormant after Republican electoral defeats in 2012.    

In an address on Thursday, President Obama will attempt to lay out his justification for drone strikes, which have been in decline since 2010, and what they have achieved.    

Kaitlyn Hunt is being prosecuted for sex crimes because of encounters with a 14-year-old girl who was her high school basketball teammate.    

Parents say the Chicago Board of Education’s plan to shut 53 elementary schools is uprooting the personal and academic lifelines of the city’s neediest communities.    

A year ago, when the current Internal Revenue Service scandal that has swirled around President Obama first emerged, Washington — and, apparently, the White House — shrugged.    

While federal firefighters explore the use of drones to map a wildfire’s size and speed, safety requirements of the F.A.A. is holding up testing and implementation.    

Officials said it was still too early to say precisely how many people had been killed by the tornado in Oklahoma, but the toll appeared to be significantly less than initially feared.    

In the convoluted world of corporate tax accounting, corporate money that is technically overseas is often held in American banks.    

The officer, Brig. Gen. Bryan T. Roberts, was suspended from duty Tuesday and is facing allegations of misconduct that include adultery and a physical altercation, Army officials said.    

The Texas House passed a measure on Tuesday that would prevent the state from expanding its Medicaid program as outlined by President Obama’s health care law.    

An Uzbek man facing terrorism-related charges in Idaho will remain jailed pending his trial after waiving his right to a detention hearing.    

The devastation in Oklahoma again thrust the president into the role of national comforter, while on Capitol Hill calls for compassion and for spending discipline were heard.    

The Senate Judiciary Committee, voting 13 to 5 to approve a bill drafted by a bipartisan group of eight senators, agreed to hold off on an amendment that would have added protections for gay couples.    

The government on Tuesday dropped one charge against Pfc. Bradley Manning, the confessed source of vast archives of government documents made public through WikiLeaks.    

Tim Cook came to Capitol Hill prepared to face down senators furious over evidence that Apple had avoided paying billions in taxes, but he left having won many of them over.