BISMARCK, N.D. — An American Indian tribe that has led opposition to the Dakota Access oil pipeline for more than two years has formally pledged its support for protests against three other pipeline projects.

The Standing Rock Sioux Council approved resolutions this month supporting efforts by other tribes to oppose the Enbridge Line 3 project in Minnesota, the Keystone XL pipeline in Montana and South Dakota, and the Bayou Bridge pipeline in Louisiana. The resolutions do not come with any promise of money or other aid but are a payback of sorts for other tribes’ support of Standing Rock’s struggle against Dakota Access.

“These are only to stand in solidarity with their fights,” tribal spokeswoman Danielle Finn said.

Standing Rock led protests in 2016 and 2017 against Dakota Access, which is now moving oil from North Dakota to Illinois but is still the subject of a federal lawsuit spearheaded by the tribe. Thousands of people traveled to protest camps just outside of the reservation that straddles the North Dakota-South Dakota border to support the tribe.