Nick Stremble, a registered nurse and manager at the hospital, described what he saw Monday. As winds ripped through the facility, people started "to tumble and roll and be pushed down the hall," he said.

Douglas Shulman, who led the IRS during the years when agency workers targeted tax-exempt applications from conservative groups, did his best to deflect accusations from unhappy senators.

Melissa Block and Robert Siegel have the latest on the tornado that caused major damage in Moore, Okla., on Monday.

For some neighbors in Moore, Okla., the decision of taking cover away from home or sheltering in place made the difference between life and death.

Apple CEO Tim Cook faced tough questions on Capitol Hill on Tuesday. He defended a tax strategy that allows Apple to avoid taxes on tens of billions of dollars of profits. Cook also called on the Congress to lower the U.S. corporate tax rate.

Today in Oregon, voters are deciding whether to raise their own taxes to make up for lost timber payments from the federal government. Hundreds of counties in Western states are facing a financial crisis due to the loss of timber payments. Property taxes usually pay for county services such as law enforcement. But counties in states from Colorado to California have vast national forests and can't collect taxes on that land. So Congress created timber payments to compensate them. Now the bill authorizing those payments has expired. Oregon received the largest payments, and more than half its counties face a budget and safety crisis now. Amelia Templeton of Oregon Public Broadcasting reports that in Josephine County, the sheriff has laid of 80 percent of his deputies and no longer arrests people.

It's been a difficult day in Moore, Okla., as crews go house-to-house searching for survivors from Monday's tornado. Authorities have tightened access into areas with the worst damage.

The tech industry is getting a lot in the Senate's immigration overhaul bill. It increases the number of temporary worker visas for skilled technical workers but the industry is pushing for more, including the end of provisions meant to protect American tech workers from unfair competition. The industry's goals and tactics are antagonizing other groups that want to see the bill pass.

The high school in Moore, Okla., wasn't badly damaged by Monday's tornado. But a special ed teacher stayed with her own students there rather than hunting for her own daughter at a wrecked elementary school.

Robert Siegel speaks with John Farnen, executive director of strategic projects for Mercy Hospital Joplin, regarding lessons of the Joplin, Mo., tornado for rebuilding large structures like the Mercy Hospital Joplin.