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HOUSTON, Texas – President Donald Trump is directing that American flags be flown at half-staff for 30 days to honor the memory of former President George H.W. Bush.

In a proclamation signed Saturday hours after Bush died, Trump is also designating Wednesday as a national day of mourning. Trump encourages Americans to gather in places of worship “to pay homage” to Bush’s memory.

He adds: “I invite the people of the world who share our grief to join us in this solemn observance.”

Trump hails Bush as “one of America’s greatest points of light,” a reference to one of the former leader’s signature phrases about American civic culture.

More on the president’s passing here.