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Both Sen. Bernie Sanders and former Maryland Gov. Martin O'Malley rushed to applaud President Obama on Friday for his decision to reject the Keystone XL pipeline.

Both O'Malley and Sanders vehemently opposed the pipeline prior to the launches of their respective campaigns. Front-runner Hillary Clinton, on the other hand, refrained from stating her opinion on the pipeline until September, five months into her campaign.

Many speculated that her opposition of the pipeline was an attempt to appease the left-leaning progressive base of the party, which has shown significant support for Sanders.

Read more on WashingtonExaminer.com