Actress Daryl Hannah arrested outside White House during pipeline protest

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This was part of an ongoing protest effort that began Aug. 20. The controversial proposed pipeline would link Canada’s oil sands projects to Gulf Coast refineries.

Tar Sands Action, the group organizing the protests, said around one hundred protesters including Hannah were arrested Tuesday. Hundreds more have been arrested over the past weeks.

Last week Capitol Hill opponents of the proposed Keystone XL oil sands pipeline attacked the State Department’s finding that the proposed project will cause minimal environmental harm if managed properly.

The Obama administration plans to make a final decision on the pipeline by the end of the year.

For more on the proposed pipeline click here.