“The Demonrats who foisted this disaster upon us with full awareness of his concealed background which hid his far-left orientation as well as his incompetence are as blameworthy as the low-info dunces who twice elected him.”
Unfortunately President George W. Bush, VP Dick Cheney, candidate John McCain, the directors of the CIA and FBI and likely John Boehner and Mitch McConnell knew the truth and did nothing in 2008 to reveal it to the American people. Why?
To answer your "why," they were inhibited by the already levied charge of racism and "dirty pool" had they exploited 0bumble's obvious vulnerabilities; so they laid off and we have this disaster. The Dems, then and now, brand any opposition to "The One" as race-based. The much-maligned-on-this-site, Sean Hannity, had Obama's number from the start, as did most Freepers.