[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2010/images/03/31/art.mccain.flags.cnn.jpg caption="John McCain tweeted 'Drill baby drill!' on Wednesday."](CNN) - The "drill baby, drill" rally cry is back.
Sen. John McCain, R-Arizona, on Wednesday hailed President Obama's decision to open U.S. coastal waters to oil and natural gas drilling.
Arizona's senior senator, who faces a tough Republican primary fight this year, tweeted: "Drill baby drill! Good move – where are Reid and Pelosi on this?"
During the 2008 presidential campaign, McCain - as well as his running mate Sarah Palin - wholeheartedly favored offshore drilling as gas prices rose throughout the country.