PIERRE, S.D. (AP) — State regulators have again approved the portion of the embattled Keystone XL oil pipeline that would go through South Dakota.

The Public Utilities Commission's decision Tuesday still requires TransCanada Corp. to get a presidential permit for the project.

President Barack Obama blocked the pipeline in November. But an attorney for the company has said TransCanada remains committed to the project, which could be revived under the next president.

The state authorized the pipeline in 2010, but permits must be revisited if construction doesn't start within four years.

The commission voted to accept the company's guarantee that it can complete the project while meeting the conditions of the 2010 approval.

The pipeline would transport oil from Canada to Nebraska, where it would connect with existing pipelines headed to the Gulf Coast.

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