Really? Have they thought about that?

A group of 150 major Democratic donors and clean energy investors have sent President Obama a letter urging him to deny a presidential permit to the Keystone XL pipeline, comparing the decision’s significance to Abraham Lincoln’s push to end slavery through a constitutional amendment.

The missive, which was sent by the group Thursday and was obtained by The Washington Post, emphasized Obama’s respect for Lincoln and suggested the controversial pipeline–which would transport heavy crude from Alberta to refineries on the Gulf Coast–marked a similar turning point in American history.