A liberal group launched an online petition Friday demanding that potential secretary of State nominee Susan Rice divest herself of “every dollar of stock” in the Canadian company seeking approval for the controversial Keystone XL oil pipeline to the Gulf Coast.

The U.S. ambassador to the United Nations owns between $300,000 and $600,000 in TransCanada Corp. stock, according to her financial disclosure forms. The pipeline needs approval from the State Department before it can go forward. …

Green groups are pressing the White House to require that any nominee for the position divest themselves of any stock in TransCanada or other oil sands companies.