President Donald Trump, right, departs Air Force One as he arrives with first lady Melania Trump on Tuesday, Oct. 30, 2018 in Coraopolis, Pa. The Trumps came to Pittsburgh honor the victims of the deadly shooting at a synagogue in Pittsburgh's Squirrel Hill neighborhood on Saturday.

PITTSBURGH (AP) — President Donald Trump and first lady Melania Trump are at the Tree of Life Synagogue in Pittsburgh, where a gunman opened fire Saturday on worshippers, killing 11 during Sabbath services.

It was the worst attack on Jews in the nation's history.

White House press secretary Sarah Sanders says the Trumps are lighting candles for each of the victims in the synagogue vestibule.

They are joined by Trump's daughter Ivanka and her husband, Jared Kushner, as well as Tree of Life Rabbi Jeffrey Myers and Ron Dermer, Israel's ambassador to the United States.

At a makeshift memorial of Jewish stars outside the synagogue, the Trumps are placing lay white roses and a stone from the White House for each of the dead.

The White House says the purpose of Trump's visit on Tuesday is to “express the support of the American people and to grieve with the Pittsburgh community.”

Local and religious leaders are divided on whether he should visit.

The Democratic governor of Pennsylvania and the Democratic mayor of Pittsburgh didn't want him to visit while people were mourning the deaths.

Trump's trip is set against the backdrop of national unease over incidents of political violence and hate, and questions about his credibility as unifier.