Latest Mostly False Fact-checks on Joe Barton Joe Barton stated on February 12, 2013 in in reaction to President Barack Obama's State of the Union address.: Says U.S. greenhouse gas "emissions are at 20-year lows." Joe Barton stated on August 19, 2010 in a speech.: "Eighty percent of the oil we're discovering, we're discovering in the deep Gulf" of Mexico. Joe Barton stated on November 11, 2010 in a speech at The Heritage Foundation.: Says you can buy four light bulbs for $1.99 at Walmart, while a single compact fluorescent lamp (CFL) costs "$10 a pop."