WATCH: Hollywood stars protest pipeline in DC

Hollywood stars Susan Sarandon and Shailene Woodley spoke out against a planned pipeline through North Dakota from outside the federal district court building in Washington, D.C., Wednesday, joining a growing Native American effort to stop construction.


"I'm calling out Hillary Clinton and Donald Trump to use this as an issue in their debates," Woodley said to The Hill's Molly K. Hooper of the presidential candidates.

Woodley, an outspoken supporter of Bernie Sanders's unsuccessful bid, told The Hill this is "a beautiful opportunity" for Clinton to prove she's serious about working to stop climate change and supporting Native American communities."

The Hill environmental reporter Devin Henry explains what's at stake in the the Standing Rock Sioux tribe's lawsuit to stop construction of the Dakota Access pipeline.