Sometimes it’s tough to suss out bias in polling, I grant you. This is not one of those times. Reuters leads with a story about Barack Obama’s approval rating jumping back up to 50%: For the first time since early July, more Americans approve of the job President Barack Obama is doing than disapprove, according to a new Reuters/Ipsos poll that shows his approval rating now at 50 percent.The poll, taken March 8-11 on the heels of reports that 227,000 jobs were added to the U.S. economy in February, indicates that Obama’s rating has risen by 2 percentage points during...