The latest jobs report should persuade all those who worry about the president’s economic policies but find him likable that enough is enough, and that policy trumps personality when it comes to deciding who should occupy the White House. Job creation remains anemic, the unemployment rate has ticked up to 8.3 percent, and the labor force participation rate continues to fall as more and more Americans choose the couch over tramping the streets looking for work. The Labor Department sums it up: Both the number of unemployed and the unemployment rate “have shown little movement thus far in 2012.” It should be clear that it is time for a change.