According to filings with the Federal Communications Commission, API is planning to spend more than $68,000 on TV ads on three major networks in the Twin Cities. An API spokesperson declined to give the total amount of the ad buy.
The Keystone pipeline would bring oil from Canada to the United States, and the Senate may vote as early as this week on the measure.
Franken and Klobuchar were among Democrats who voted against similar measures in the past.
The television ads focus on jobs that could be created by the project, and prominent people who have backed the plan.
Here's one of the ads running in the Twin Cities.