WASHINGTON - US President Barack Obama urged black leaders on Saturday to "stop complaining" and help him push his jobs plan through the US Congress, as he sought to bolster support in the black community amid concern over high unemploymentIn an impassioned speech to an awards banquet of the Congressional Black Caucus, Obama likened his efforts to win approval of his $447 billion jobs package to civil rights struggles of the 1960s and exhorted his audience to "march with me and press on."Facing a tough 2012 re-election fight, Obama sought to shore up once-unquestioned support in the black community where opinion polls show waning voter enthusiasm for his policies while some politicians have criticized him for not focusing enough on black unemployment.