‘This Week’ Transcript: Sen. Ted Cruz and Former Defense Secretary Robert Gates

— -- THIS IS A RUSH TRANSCRIPT FOR 'THIS WEEK' ON May 1, 2016 and it will be updated.

UNIDENTIFIED MALE: Starting right now on THIS WEEK with George Stephanopoulos. Trump unstoppable?

DONALD TRUMP (R), PRESIDENTIAL CANDIDATE: We're going to win so strong.

UNIDENTIFIED MALE: Back up, now!

(END VIDEO CLIP)

UNIDENTIFIED MALE: Unfazed by dramatic new protests.

(BEGIN VIDEO CLIP)

TRUMP: That was not the easiest entrance I've ever made. I felt like I was crossing the border, actually.

(END VIDEO CLIP)

UNIDENTIFIED MALE: The billionaire frontrunner closes in on the GOP nomination.

So, will it be Trump versus Clinton?

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TRUMP: The only thing she's got going is the woman's card.

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UNIDENTIFIED MALE: And did Donald just give Hillary a winning hand?

(BEGIN VIDEO CLIP)

HILLARY CLINTON (D), PRESIDENTIAL CANDIDATE: Then deal me in.

(END VIDEO CLIP)

UNIDENTIFIED MALE: Plus, could a President Trump really negotiate a safer world?

Former Defense secretary, Robert Gates, weighs in.

And...

(BEGIN VIDEO CLIP)

BARACK OBAMA, PRESIDENT OF THE UNITED STATES: Obama.

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UNIDENTIFIED MALE: Obama's last laugh -- we've got the star-studded moments from the president's final White House Correspondents Dinner.

From ABC News, it's THIS WEEK.

Here now, co-anchor Martha Raddatz.

MARTHA RADDATZ, ABC NEWS HOST: Good morning.

And now the stage is set -- President Obama bringing down the house one last time at that annual Washington ritual, the White House Correspondents Dinner.

Reflecting on his eight years, poking fun at the men and woman who want to take his place.

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OBAMA: My eighth and final appearance at this unique event.

(LAUGHTER)

OBAMA: And I am excited. If this material works well, I'm going to use it at Goldman Sachs next year.

(END VIDEO CLIP)

RADDATZ: This morning, it's all about who will succeed him.

Onto the future now and three big unresolved questions.

Will Tuesday's Indiana election breathe new life into Senator Ted Cruz's bid to take the race all the way to the Cleveland convention?

Or will it put a practical end to the 2016 primary season?

We'll talk to the senator in a moment.

The second question -- how rough will the next stage be?

We got a preview in the blistering back and forth over the so-called woman's card, the first salvo in a contest that's likely to get even nastier, even more personal.

And third, how wild that image of Donald Trump surrounded by a small army of Secret Service agents, clamoring over barriers to avoid angry protests -- a reminder of the passion behind the politics, that the anger that burned through the primaries could well intensify.

This week, a hard look at the campaign and the country and what's next.

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OBAMA: You know I've got to talk about Trump,

RADDATZ: Last night's White House Correspondents Dinner and once again Donald Trump was the butt of the joke.

OBAMA: I heard that he's not here tonight.

What could he possibly be doing instead?

Is he at home eating a Trump steak, Tweeting out insults to Angela Merkel?

What's he doing?

RADDATZ: Rewind to five years ago, when Trump was in the audience. But he wasn't laughing.

UNIDENTIFIED MALE: Donald Trump has been saying that he will run for president as a Republican, which is surprising, since I just assumed he was running as a joke.

OBAMA: In an episode of "Celebrity Apprentice," you didn't blame Little John or Meatloaf, you fired Gary Busich (ph).

(LAUGHTER)