NASA's retreat from Mars, Opinion, USA Today
"While the Obama administration is the one lowering the priority of Mars exploration, presidents going back to Richard Nixon have all reduced their funding of NASA, relative to other federal programs."
Letter: NASA's Mars program remains strong, John Gunsfled, USA Today
"While we have great respect for Marc Kaufman's expertise as a space journalist, his Wednesday Forum piece, "NASA's retreat from Mars" leaves a false impression. ... Far from retreating, we're advancing our best talents toward exploring the Red Planet with Curiosity and forging the path for future human Mars exploration."