News Wrap: Turkish car bomb kills 11; Obama welcomes Modi

JUDY WOODRUFF: Good evening. I'm Judy Woodruff. Gwen Ifill is away.

On the "NewsHour" tonight: It's the last Super Tuesday of the primary election season. Six states cast their votes, just as Hillary Clinton crosses the delegate threshold. But Bernie Sanders says it's still not over.

Also ahead this Tuesday:

Do you believe he's fit to be president?

SEN. MITCH MCCONNELL (R-KY), Majority Leader: The American people are going to make that decision.

JUDY WOODRUFF: I sit down with Senate Majority Leader Mitch McConnell to talk about Donald Trump, the race for the White House, and the Kentucky senator's new book.

And as states battle the federal government over which bathrooms transgender people should use, one student is pushing her school to be on the frontier of change.

MADDIE DALTON, Student, Atherton High School: It all comes down to being respected as a person. Now, that's all relying on the fundamental assumption that you respect being transgender as a legitimate, like, concept, as a legitimate thing.

JUDY WOODRUFF: All that and more on tonight's "PBS NewsHour."

(BREAK)

JUDY WOODRUFF: It's the last Super Tuesday of the 2016 primary season, and it's something of an anticlimax. According to new delegate counts, Hillary Clinton wrapped up the Democratic nomination overnight, hours before polls opened in six states.

Meanwhile, Republican Donald Trump was the center of a firestorm in his own party over his comments about a federal judge of Mexican descent. We will have a full report after the news summary.

In the day's other news: A car bombing killed 11 people and wounded 36 in Istanbul, Turkey. The target was a police vehicle, and seven of the dead were officers. The blast shook a neighborhood that houses universities and ancient Roman sites. It was the city's fourth attack this year, but the Turkish president vowed not to be intimidated.

PRESIDENT RECEP TAYYIP ERDOGAN, Turkey (through interpreter): These terrorist activities, these steps are being taken against those responsible for providing security. This is unforgivable, inexcusable. We will continue our struggle against the terrorists until the end, fearlessly and tirelessly.

JUDY WOODRUFF: The escalation in violence is blamed mostly on Kurdish rebels and Islamic State militants.

The leaders of the world's two largest democracies met today, with climate change high on the agenda. President Obama welcomed India's Prime Minister Narendra Modi to the White House. They discussed getting India to join a landmark climate change agreement this year, among other things. India is the world's third largest carbon emitter, after China and the U.S.

Another set of high-level talks between the U.S. and China wrapped up today in Beijing. Secretary of State John Kerry urged the Chinese to reduce barriers for foreign businesses. The Chinese, in turn, agreed to stop flooding global markets with excess steel. There was no progress reported on territorial disputes in the South China Sea.

Here in the U.S., the Pacific Northwest kicked off a major earthquake and tsunami drill today. The four-day event dubbed Cascadia Rising assumes a catastrophic quake just 95 miles off the Oregon coast. The affected area would include the cities of Seattle and Portland. Both U.S. and Canadian agencies are taking part in the drill.

KENNETH MURPHY, FEMA: These type of events are survivable. If you take the time to make some personal preparations, and work with your family and how you're going to communicate, and then how you're going to help your neighbors and your community and so forth, that will make probably the biggest difference.

JUDY WOODRUFF: Some 20,000 people will be involved in the exercise.

On Wall Street today, the Dow Jones industrial average gained about 18 points to close at 17938. The Nasdaq fell seven points, and the S&P 500 added two. And oil closed above $50 a barrel for the first time since July.

And the last surviving 9/11 search dog has died in Texas at age 16. In 2001, Bretagne, a golden retriever, helped hunt for human remains at the World Trade Center site. She was euthanized Monday at a clinic outside Houston, after suffering kidney failure. First-responders lined the sidewalk and draped an American flag over Bretagne's coffin.

Still to come on the "NewsHour": six states vote as Hillary Clinton crosses the delegate threshold; Mitch McConnell on whether Donald Trump is fit to be president; mafia-linked businesses exploiting migrants in Italy; and much more.