LINCOLN, Neb. — The Nebraska chapter of Americans for Prosperity is calling on the leader of a pipeline opposition group to apologize for suggesting temporary construction workers who would build the proposed Keystone XL pipeline might sexually assault women who live nearby.

AFP-Nebraska points to a news release sent out Monday by Bold Nebraska that cites a Washington Post story about an alliance of Native American groups that have vowed to make a last stand if the pipeline is approved. The Post story said the groups are concerned about water pollution, environmental issues and the “risk of sexual assault by the thousands of temporary construction workers housed in work camps on tribal land.”

Bold Nebraska, which has organized opposition to the proposed Keystone XL oil pipeline, sent out an email to media Monday alerting reporters to the Post story, with a summary.