Impeachment hearings, Hong Kong siege: TODAY’s top news stories

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Many of the officials who will testify as impeachment hearings resume Tuesday were directly involved in President Trump’s July 25 call to Ukraine. In other TODAY news stories, police are laying siege to a Hong Kong . university where protesters are holed up, and Bei Bei the giant panda is leaving the National Zoo for a new home in China. See all the top TODAY news in one video.