By Josh Lederman
WASHINGTON (AP) - President Barack Obama has vetoed a Republican bill forcing construction of the Keystone XL oil pipeline.
The White House sent notice of the veto to the Senate on Tuesday, shortly after the bill was received at the White House. It's the third veto of Obama's presidency.
The move puts a freeze on a top GOP priority, at least for now. It also reasserts Obama's authority over a project that's become a flashpoint in the national debate about climate change.