'Start Here': Trump's Homeland Security purge, Attorney General William Barr's Capitol Hill grilling

It's Tuesday, April 9, 2019. Let's start here.

1. 'Housecleaning'

President Donald Trump's purge of the Department of Homeland Security continued Monday with the firing of Secret Service Director Randolph Alles less than 24 hours after DHS Secretary Kirstjen Nielsen announced her resignation.

Despite the administration's aggressive immigration tactics, the U.S. is still seeing a record surge of migrants at the border, which has frustrated the president and led to this DHS "housecleaning," ABC News Senior National Correspondent Terry Moran tells "Start Here."

"He's taken control of this department, and he is driving toward a much harder line," Moran says. "We are hearing there will be more top officials out by the end of the week as the entire department leadership is restructured."

2. Barr and grill

Attorney General William Barr will be on Capitol Hill today and questioned by House Democrats seeking full access to special counsel Robert Mueller's report and answers about Barr's conclusions about Mueller's conclusions.

Sources say the attorney general wants to avoid fireworks at the budget hearing, according to ABC News' Mike Levine, so Barr likely will highlight the Department of Justice's work outside the Russia investigation, including efforts on immigration and reducing violent crime.

3. Whatever Bibi wants?

Israeli voters are headed to the polls for parliamentary elections that have become a referendum on Benjamin Netanyahu, who's seeking his fifth term as prime minister.

He's being challenged by Benny Gantz, a former military chief of staff, who's pitched himself as a centrist alternative to Netanyahu and his decade of right-wing leadership.

Although it's a tight race, the incumbent Bibi may still have the upper hand, ABC News' Jordana Miller reports from Jerusalem.

"Even if Netanyahu ties -- even if he comes short one or two seats -- he still has the political partners who will join forces with him and help him form a ruling coalition," Miller says on today's podcast. "And that's who really wins the prime minister's office."

4. 'A basic reality'

The Trump administration has designated the Islamic Revolutionary Guard Corps, a military branch of the Iranian government, as a foreign terrorist group, a move that allows the U.S. to criminally prosecute anyone who provides "material support" to the organization.

"The Trump administration is simply recognizing a basic reality," Secretary of State Mike Pompeo said. "The IRGC masquerades as a legitimate military organization, but none of us should be fooled. It regularly violates the laws of armed conflict and plans, organizes and executes terror campaigns all around the world."

It's the first time part of a foreign government has been designated as a terrorist organization, and there are concerns Iran could retaliate, particularly against U.S. diplomats and service members in the region, ABC News' Conor Finnegan tells us.

"Start Here," ABC News' flagship podcast, offers a straightforward look at the day's top stories in 20 minutes. Listen for free every weekday on Apple Podcasts, Google Podcasts, iHeartRadio, Spotify, Stitcher, TuneIn or the ABC News app. Follow @StartHereABC on Twitter, Facebook and Instagram for exclusive content and show updates.

Elsewhere:

'She will be deeply missed': Colleagues remember the vivacious and kind Alexa Valiente, an award-winning ABC News producer who died from health complications over the weekend.

'We have provided as much assistance as possible to the authorities and will now continue to provide support to both Kimberly and our guide Jean-Paul as they work toward returning to their homes and families': The American woman and her guide kidnapped in Uganda last week have been safely recovered, but was a ransom paid to their captors?

'Ultimately, what was her endgame?': The Chinese woman who sneaked into Mar-a-Lago has not been accused of espionage, but authorities are investigating whether she should be.

'I asked Lippi about the Keurig coffee machine being replaced by a basketball, and he stated the clerk should have realized there was no coffee machine by the weight of the box': A Florida man who recently bought an $8 million island is accused of stealing $300 in random household goods from a Key West Kmart.

From our friends at FiveThirtyEight:

Tiger Woods may not get a better shot at another Green Jacket: According to VegasInsider, Woods has the third-best odds of any player to win this weekend.

Doff your cap:

A new episode of "The Investigation" drops today.

Robert Driscoll, an attorney for Carl Kline, the former supervisor of White House whistleblower Tricia Newbold, says on the podcast that Democrats on the House Oversight Committee are more motivated by the opportunity to dig into information about the first family than by protecting national security.

"There's no legislative interest in any of this," Driscoll says. "There's been kind of opposition research that people have tried to convert into government investigations."

Listen to the full show ...

... and read the full transcript of the interview.