Obama said if elected his government would "harness technology to confront the biggest challenges that America faces". — Barack Obama Copy Share Image
This is a time of great challenges for America, and I pray that the president will be successful in guiding our nation. — Mitt Romney Copy Share Image
As threats grow around the globe, we have a duty to ensure our servicemembers have the resources to meet these challenges and… — Michael Waltz Copy Share Image
I think that retiring the baby boomers is going to be one of the great challenges in America, that you cannot make… — Richard Lamm Copy Share Image
