American oil companies are fiercely opposed to the president's nascent plan to ban exports of diesel, but vulnerable Republicans are putting pressure on him.

The proposed diesel-export ban has created a rift between the administration and its traditional oil industry allies. Companies that have supported the president's energy policies now find themselves fighting against a measure they believe could harm their business interests and disrupt fuel markets.

Vulnerable Republican lawmakers, concerned about political repercussions, are adding pressure on the administration regarding the ban. The internal conflict highlights the competing interests within the president's coalition as the policy debate continues.