Police Stopped Loughner’s Car on Day of Shooting

House Honors Victims and Weighs Its Next Steps

By DAVID M. HERSZENHORN and JENNIFER STEINHAUER 6:50 PM ET

The House paid tribute to the dead and wounded in Tucson as Republicans reviewed security procedures and rejected calls for new gun laws.

• Obama to Visit Giffords in Hospital 6:04 PM ET

‘Creepy,’ ‘Very Hostile’: A College Recorded Its Fears

By MARC LACEY and SERGE F. KOVALESKI 14 minutes ago

Documents released by Pima Community College showed officials there believed Jared L. Loughner might be under the influence of drugs or mentally ill after disruptions.

• Documents: Loughner’s Troubles at Pima Community College
• Room for Debate: Dealing With Mental Disorders on Campus

Obama Calls for New Era of Civility in U.S. Politics

By HELENE COOPER and DAVID M. HERSZENHORN 9:53 PM ET

The president offered the nation’s condolences to the victims of the Tucson shooting rampage, urging Americans to usher in a new era of civility in memory of the fallen.

• Text: Obama’s Remarks
• The Caucus: Pelosi on Hand When Giffords Opens Eyes
• Times Topics: Tucson Shooting

Palin Joins Debate on Heated Speech With Words That Stir New Controversy

By JEFF ZELENY and MICHAEL D. SHEAR 2 minutes ago

A forceful denunciation of her critics in a video message about the Arizona shootings accused commentators and journalists of “blood libel” in a rush to blame heated political rhetoric for the violence.

• Sarah Palin on the Shooting in Tucson

Surgeon and Sudden Celebrity, and Trying to Balance the Roles

By JENNIFER MEDINA

Dr. Peter Rhee’s daily briefings put a human face on the medically complicated discussions about the Tucson shooting victims’ recovery.

For Survivors, Flashbacks and Questions That Visit at Night

By SAM DOLNICK

Three shooting survivors had different reasons for attending Representative Gabrielle Giffords’s community event on Saturday.

A Phrase With Roots in Anti-Semitism

By LAURIE GOODSTEIN

The expression “blood libel” has its origin in a charge against Jews that took hold in the Middle Ages in a period of rising anti-Semitism.

Increase in Arizona Handgun Checks

By TIMOTHY WILLIAMS 13 minutes ago

The F.B.I. said Wednesday that federal background checks on people in Arizona seeking to buy handguns have increased sharply following Saturday’s shooting rampage.

Legal Strategy Could Hinge on Mental Assessment

By BENJAMIN WEISER

Because of changes made after John Hinckley was acquitted for trying to kill President Reagan, the lawyers for Jared L. Loughner will find it difficult to argue the insanity defense.

Police Say They Visited Tucson Suspect’s Home Even Before Rampage

By JO BECKER, KIRK JOHNSON and SERGE F. KOVALESKI

The police said they were reviewing the details of their calls to the home of Jared L. Loughner, who was described by a friend as having embraced nihilism.

• Palin Calls Criticism ‘Blood Libel’ 8:15 AM ET
• The Caucus: After Arizona, How to Return to Politics

Threats to Lawmakers Rarely Lead to Charges

By CHARLIE SAVAGE and ERIC LIPTON

A review of hundreds of cases demonstrates just how hard it is to discern the real threats from mere bluster.

• F.B.I. Documents: Threats Against Lawmakers, 2000-2009

Doctors Say Giffords’s Condition Points to Survival

By JENNIFER MEDINA

Doctors said that Representative Gabrielle Giffords had a “101 percent chance of survival,” but that it was unclear what her recovery would look like.

• Times Topics: Arizona Shooting

News Analysis

Governor Strives to Restore Arizona’s Reputation

By ADAM NAGOURNEY

Gov. Jan Brewer, who has been identified with contentious issues like immigration, set aside politics to pay tribute to the victims of the shooting.

For Boehner, Rampage Imposes Its Own Agenda

By CARL HULSE

He expected to lock horns with the Democrats, but Speaker John A. Boehner finds himself instead called on to play a far less partisan role in the wake of the shootings in Tucson.

For One Victim, Recovery Means Coping With Young Neighbor’s Death

By JENNIFER MEDINA

Suzi Hileman was holding 9-year-old Christina Green’s hand when the girl was shot.

Illinois Legislators Approve 66% Tax Increase

By MONICA DAVEY 48 minutes ago

The vote, only hours before new lawmakers took over, reflected the urgency of the state’s fiscal crisis.

Reporter’s Notebook

Texas Republicans Savoring Power

By JAMES C. McKINLEY Jr.

The Texas Legislature convened with Republicans in unassailable control but facing tough budget decisions.

5 Candidates Casting Nets for Votes in G.O.P. Contest

By JEFF ZELENY

Voting for chairman of the Republican National Committee, which begins Friday, can be wildly unpredictable.

Justices Look Again at How Police May Search Homes

By ADAM LIPTAK

The Supreme Court considers what circumstances might outweigh the need for a warrant.

Cuban Exile Lied to U.S., Prosecutor Tells Texas Jury

By JAMES C. McKINLEY Jr.

Luis Posada Carriles, 82, is accused of lying about how he entered the United States and about his role in a series of bombings in Havana.

Tougher Rules Urged for Offshore Drilling

By JOHN M. BRODER

The presidential panel investigating the 2010 oil spill in the Gulf of Mexico recommended warned that unless industry practices improved, another accident was inevitable.

• Lens: Painting in Deadly Oil

Gates Warns of North Korea Missile Threat to U.S.

By ELISABETH BUMILLER and DAVID E. SANGER

Defense Secretary Robert M. Gates said the country was within five years of developing a missile with the potential of hitting Alaska or the West Coast.

Illinois Bill Eliminating Death Row Is Approved

By MONICA DAVEY

The legislation to end capital punishment in Illinois now goes to Gov. Patrick J. Quinn, who has not indicated whether he will sign it.

Court Rules on Debtors and Doctors in Training

By ADAM LIPTAK

The Supreme Court says medical residents must pay Social Security taxes, and some bankrupt car owners are not entitled to shield a monthly amount for the “ownership costs” of their vehicles.

Young People Are Heeding Austin’s Call, Data Shows

By SABRINA TAVERNISE

A Brookings Institution demographer tracked the migration of some of the country’s most mobile citizens.

Biden Assures Karzai of Aid From U.S. Beyond 2014

By RAY RIVERA

In an unannounced visit to Kabul, the vice president promised that the United States would still provide aid and military training beyond the planned transition deadline.

Interactive Graphic: Making a Complex Machine Even More Complex

Linear accelerators create X-ray beams aimed at cancer or other problems. Some are retrofitted with a cylindrical assembly — called a cone — which concentrates the radiation for more precise treatments. Because the beams are so intense, a single error can cause serious injuries or death.

Interactive Map: Every City, Every Block

Browse data from the Census Bureau’s American Community Survey, based on samples from 2005 to 2009.

• Immigrant Path to Suburbia
• A Sampling of Highs and Lows
• Region Is Reshaped

Interactive: Immigration Conversations

Share your thoughts and reply to others about immigration.

Interactive Feature: Faces of the Dead

As we mark the seventh anniversary of the U.S.-led invasion of Iraq, we remember the fallen service members who lost their lives in Iraq and Afghanistan.