Chief Investigative Correspondent Aaron Katersky reports on the investigation into what police are calling an "act of arson" that forced the evacuation of Pennsylvania Governor Josh Shapiro from the governor's mansion; Senior White House Correspondent Selina Wang has the latest on another reversal in President Donald Trump's tariff policy with new targeted tariffs on semiconductors looming; Reporter Melissa Adan reports on the FBI investigation into the teen who allegedly killed his parents as part of what authorities say was a Trump assassination plot; and more on ABC World News Tonight with David Muir.

00:00 Intro
02:30 story 1 Police: PA Governor evacuated after 'act of arson'
04:45 story 2 Trump Admin signals another tariff reversal
08:05 story 3 FBI investigating alleged Trump assassination plot
09:14 story 4 FAA investigating small plane crash in New York
11:22 story 5 Man wrongly deported to El Salvador 'alive u0026 secure'
13:33 story 6 Dozens killed in Russian missile attack in Ukraine
15:05 story 7 U.S. college students detained in Denmark

16:25 story 8 Multiple injured in home explosion in Austin, Texas
16:44 story 9 Former LSU receiver, NFL hopeful found dead at 24
17:03 story 10 Protests over resentencing of Menendez brothers

17:42 story 11 Pope makes surprise visit during Palm Sunday mass

18:04 story 12 Mary Bruce: America Strong

ABC World News Tonight with David Muir delivers the news that matters most. Watch to get the latest news stories and headlines from around the world.

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