President Obama will address mayors from cities around the world on Tuesday as he speaks at the North American Climate Summit.
The three-day summit started on Monday and is taking place in the city of Chicago, where Obama attended law school and in the same state where he served as a U.S. Senator. This is the first summit of it's kind to be hosted by the city.
Mayors from 51 cities are said to be attending the event. They are planning to sign a charter outlining actions planned at the summit. Mayors from Montreal and Mexico City are among the non-U.S. mayors attending.
In June, President Donald Trump announced that the U.S. will withdraw from the Paris climate accord. Trump and Chicago Mayor Rahm Emanuel have been at odds on the subject of climate change. Earlier Tuesday, Emanuel told the conference that mayors are stepping up because there is no consensus from national governments.
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