OMAHA, Neb. (AP) — A hearing is scheduled Monday in the Nebraska lawsuit challenging a Canadian company’s efforts to build an oil pipeline across the Plains to the Gulf Coast.

The landowners are challenging the validity of the state law that authorized TransCanada’s proposed route through the state for the Keystone XL pipeline.

The proposed pipeline needs President Barack Obama’s approval before it could be built across Montana, South Dakota and Nebraska to connect with existing pipelines. It would carry more than 33.6 million gallons of oil daily.

TransCanada has said that 90 percent of Nebraska landowners along the Keystone XL route — and 100 percent of those in Montana and South Dakota — have agreed to easements to build the pipeline.