US President Barack Obama speaks about t

US President Barack Obama speaks about the importance of American workers developing American-made energy to an economy that?s built to last at the UPS in Las Vegas, Nevada, on January 26, 2012. Obama denied Republican claims he was waging class warfare as he set out to sell his call for tax hikes on the rich in states crucial to his reelection bid. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

US President Barack Obama is seen throug

US President Barack Obama is seen through a window of the Air Force One upon arriving at the Las Vegas McCarren International Airport in Las Vegas, Nevada, on January 25, 2012. Obama kicked off a three-day. five-state tour, a day after his State of Union speech. Obama wants large tax hikes on millionaires to finance a fair economy for all, a populist vision aimed at convincing crisis-weary voters he merits a second White House term. In his annual State of the Union address late Tuesday -- which this year served as a grand kick-off of his 2012 reelection campaign, Obama played on rising anger over inequality in the wake of the 2008 economic collapse. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

US President Barack Obama is seen throug

US President Barack Obama is seen through a window of the Air Force One upon arriving at the Las Vegas McCarren International Airport in Las Vegas, Nevada, on January 25, 2012. Obama kicked off a three-day. five-state tour, a day after his State of Union speech. Obama wants large tax hikes on millionaires to finance a fair economy for all, a populist vision aimed at convincing crisis-weary voters he merits a second White House term. In his annual State of the Union address late Tuesday -- which this year served as a grand kick-off of his 2012 reelection campaign, Obama played on rising anger over inequality in the wake of the 2008 economic collapse. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

US President Barack Obama is greeted by

US President Barack Obama is greeted by mayor Carolyn Goodman upon arriving at the Las Vegas McCarren International Airport in Las Vegas, Nevada, on January 25, 2012. Obama kicked off a three-day five states tour, a day after his State of Union speech. Obama wants large tax hikes on millionaires to finance a fair economy for all, a populist vision aimed at convincing crisis-weary voters he merits a second White House term. In his annual State of the Union address late Tuesday -- which this year served as a grand kick-off of his 2012 reelection campaign, Obama played on rising anger over inequality in the wake of the 2008 economic collapse. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

US President Barack Obama speaks about t

US President Barack Obama speaks about the importance of American workers developing American-made energy to an economy that?s built to last at the UPS in Las Vegas, Nevada, on January 26, 2012. Obama denied Republican claims he was waging class warfare as he set out to sell his call for tax hikes on the rich in states crucial to his reelection bid. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

US President Barack Obama speaks about t

US President Barack Obama speaks about the importance of American workers developing American-made energy to an economy that?s built to last at the UPS in Las Vegas, Nevada, on January 26, 2012. Obama denied Republican claims he was waging class warfare as he set out to sell his call for tax hikes on the rich in states crucial to his reelection bid. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

President Obama Speaks About The Economy At UPS Facility In Las Vegas

LAS VEGAS, NV - JANUARY 26: U.S. President Barack Obama speaks at a UPS freight facility January 26, 2012 in Las Vegas, Nevada. Obama, who is on a three-day trip to five states following his State of the Union speech, spoke about green energy and the U.S. economy. (Photo by Ethan Miller/Getty Images)

US President Barack Obama speaks about t

US President Barack Obama speaks about the importance of American workers developing American-made energy to an economy that?s built to last at the UPS in Las Vegas, Nevada, on January 26, 2012. Obama denied Republican claims he was waging class warfare as he set out to sell his call for tax hikes on the rich in states crucial to his reelection bid. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

US President Barack Obama arrives to spe

US President Barack Obama arrives to speak about the importance of American workers developing American-made energy to an economy that?s built to last at the UPS in Las Vegas, Nevada, on January 26, 2012. Obama denied Republican claims he was waging class warfare as he set out to sell his call for tax hikes on the rich in states crucial to his reelection bid. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

US President Barack Obama leaves after s

US President Barack Obama leaves after speaking about the importance of American workers developing American-made energy to an economy that?s built to last at the UPS in Las Vegas, Nevada, on January 26, 2012. Obama denied Republican claims he was waging class warfare as he set out to sell his call for tax hikes on the rich in states crucial to his reelection bid. AFP Photo/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/Getty Images)

President Obama Speaks About The Economy At UPS Facility In Las Vegas

LAS VEGAS, NV - JANUARY 26: U.S. President Barack Obama speaks at a United Parcel Service (UPS) freight facility January 26, 2012 in Las Vegas, Nevada. Obama, who is on a three-day trip to five states following his State of the Union speech, spoke about greater use of natural gas and the U.S. economy. (Photo by Ethan Miller/Getty Images)

President Obama Speaks About The Economy At UPS Facility In Las Vegas

LAS VEGAS, NV - JANUARY 26: U.S. President Barack Obama speaks at a United Parcel Service (UPS) freight facility January 26, 2012 in Las Vegas, Nevada. Obama, who is on a three-day trip to five states following his State of the Union speech, spoke about greater use of natural gas and the U.S. economy. (Photo by Ethan Miller/Getty Images)

President Obama Speaks About The Economy At UPS Facility In Las Vegas

LAS VEGAS, NV - JANUARY 26: U.S. President Barack Obama waves as he is introduced at a United Parcel Service (UPS) freight facility January 26, 2012 in Las Vegas, Nevada. Obama, who is on a three-day trip to five states following his State of the Union speech, spoke about greater use of natural gas and the U.S. economy. (Photo by Ethan Miller/Getty Images)

President Obama Speaks About The Economy At UPS Facility In Las Vegas

LAS VEGAS, NV - JANUARY 26: U.S. President Barack Obama waves as he is introduced at a United Parcel Service (UPS) freight facility January 26, 2012 in Las Vegas, Nevada. Obama, who is on a three-day trip to five states following his State of the Union speech, spoke about greater use of natural gas and the U.S. economy. (Photo by Ethan Miller/Getty Images)