President Trump is on his way to the United Kingdom, and London is bracing for his arrival, with thousands expected to take to the streets to protest his state visit. The crew on Good Morning Britain was particularly tense Thursday morning, with Piers Morgan face-planting during an attempted gotcha with activist Ash Sarkar, who was arguing in favor of protests against Trump.

Things began innocently enough, with Sarkar telling the hosts, "I'll be marching in Westminster tomorrow, alongside thousands of other people who found [Trump's] policy of forced separation unconscionable." Morgan then interrupted to ask, "Did you find [Barack] Obama deporting 3 million people to be unconscionable?"

Without hesitation, Sarkar replied, "Yes!" Morgan then asked when she ever protested against Obama, with co-host Susanna Reid cutting in to say, "You don't have to go out and march against everything in order to make a point about one thing."

Morgan wasn't finished yet, though, and when Sarkar suggested he check out some of her activist work, he answered: "Go check out some basic facts about your hero Obama."

"He's not my hero!" Sarkar said. "I'm a communist, you idiot!" Watch Morgan's blundering argument below. Jeva Lange

As lawmakers were bracing themselves for Attorney General William Barr to reveal the principle conclusions of Special Counsel Robert Mueller's investigation into whether the Trump presidential campaign colluded with Russian election interference in 2016, President Trump reportedly had quite a calm weekend. He barely even tweeted.

CNN reported that Trump was enjoying time at his Mar-a-Lago resort in Palm Beach, Florida with First Lady Melania Trump and their son, Barron. He was on a phone call with German Chancellor Angela Merkel discussing trade and Brexit when news that Mueller had handed over his investigation to Barr became official.

Per CNN, Trump and the aides who traveled with him to Florida were relieved that the investigation had reached its conclusion and viewed the fact that Mueller did not recommend any further indictments as a cause for celebration, which lines up with earlier reports that the White House is feeling confident that the investigation will clear Trump legally. The president was reportedly in good spirits on Friday evening at dinner and on Saturday took to the golf course with singer Kid Rock.

So much for stress. Read the full report at CNN. Tim O'Donnell

The Muslim community in Christchurch, New Zealand has reclaimed a place of worship. On Saturday, the restored Al-Noor mosque, one of the sites of the mass shootings that killed 50 people at two mosques in Christchurch on March 15, was reopened.

It remains under heavy police detail, but small groups of worshippers are now allowed in for limited periods of time, reports RNZ National. Although the mosque has been completely restored following the damage, those who enter have been asked to refrain from taking photographs. Several survivors of the shootings, carried about by a 28-year-old Australian named Brenton Tarrant who expressed racist, anti-immigrant views, were among the first people to return to the mosque.

On Saturday, nearly 40,000 people turned out for a vigil in Christchurch on Saturday evening, as the country continues to mourn the attacks. Saturday’s vigil, which included speeches, music, and moments of silence, is the latest in a string of remembrance events that have and will continue to take place around New Zealand. Tim O'Donnell

Protests took place in Pittsburgh on Saturday after a jury acquitted a former East Pittsburgh police officer who was tried for the killing of Antwon Rose, an unarmed black 17-year-old, last June.

The officer, Michael Rosfield, who is white, shot Rose three times after the teenager ran from a traffic stop. Rosfield said that Rose was in a car that matched the description of one involved in a drive-by shooting 20 minutes prior to the traffic stop. Another person in the vehicle, 18-year-old Zaijuan Hester, pleaded guilty last week to the drive-by shooting. He said that he, not Rose, fired the shots.

Crowds gathered in protest over the jury's decision outside of the Allegheny County Courthouse on Friday evening and continued throughout the city on Saturday. Shots were reportedly fired at the window of one of Rosfield's attorney's offices on Saturday morning in what was an apparent retaliation. No one was hurt. But Rose's father urged people to refrain from violence, and Pittsburgh police described the protests as peaceful. Tim O'Donnell

British Prime Minister Theresa May said earlier this week that she did not believe the British people supported a second Brexit referendum. A massive anti-Brexit demonstration held in London on Saturday poked some holes in that theory.

The Guardian reports that the protest's organizers estimate that 1 million people took to the streets for the "Put it to the People" march, which demanded that Parliament grant a second EU withdrawal referendum. It is being considered one of the biggest protests in British history, per BBC, although specific attendance numbers have not been confirmed. Protesters carried EU flags and donned blue and yellow garb to signify their support for remaining in the Union.

The march took place just days after the EU agreed to an extension of Article 50, which will now trigger the U.K.'s exodus from the EU on April 12 — with or without a deal. May, who has so far been unable to secure a withdrawal agreement, has faced renewed calls for her resignation. Tim O'Donnell

Attorney General William Barr is reviewing Special Counsel Robert Mueller's report on whether President Trump's campaign colluded with Russian election interference, a source familiar with the situation told The Associated Press on Saturday. Barr is expected to reveal the principle conclusions of the report soon. Meanwhile, per AP, House Democrats have scheduled a conference call for Saturday to strategize over how they will proceed. As everything winds down, here are three pressing questions that remain about the Mueller investigation.

How much will Barr reveal? To state the obvious, it remains unclear just how much information the attorney general will make available to the public. Barr is under no obligation to provide any aspect of the report, but there are also no laws that prevent him from doing so. Earlier in March, Congress voted unanimously to make the report public.

Will Mueller testify? Congressional investigations into the Trump administration will continue regardless of the Mueller report's conclusions. But how much will Congress rely on Mueller going forward? Rep. Adam Schiff (D-Calif.), the House Intelligence Committee chair, said on Friday that his committee could call on Mueller to testify before them if the report is not made fully available to Congress.

Is this really the last major legal threat to Trump's presidency? The White House was reportedly feeling very confident about the conclusion of Mueller's investigation. But an undisclosed number of federal and state investigations grew out of Mueller's work that will continue to lurk behind the Trump presidency. These include the prosecution of Trump political adviser Roger Stone, as well as inquiries into the business dealings of close Trump associates like Elliott Broidy and Thomas J. Barrack. No matter how it shakes out, it is therefore unlikely that Trump will be fully in the clear. Tim O'Donnell

Attorney General William Barr sent a letter to Congress on Friday, informing lawmakers that the investigation conducted by Special Counsel Robert Mueller had reached its conclusion and the final report is now under Barr's review.

The letter did not divulge much — indeed, Barr announced that he would brief Congress more thoroughly "as soon as this weekend." But one of the key pieces information about the process came to light precisely because it was not mentioned in the letter. Per special counsel investigation regulations, The Washington Post reports, Barr and Deputy Attorney General Rod Rosenstein were required to, first and foremost, alert Congress when the investigation was complete. Beyond that, the only requirement is to "provide a description and explanation" of any action by the special counsel that the Attorney General deemed "inappropriate or unwarranted."

Barr's initial letter, therefore, would indicate that the Department of Justice did not, over the course of the last two years, block Mueller and his team from investigating anyone. In other words, there does not appear to have been any executive interference.

"There were no such instances during the Special Counsel's Investigation," Barr wrote in the letter. Read the full analysis at The Washington Post. Tim O'Donnell