NPR's Brian Naylor reports that partisan squabbling is on the rise as Democrats and Republicans on Capitol Hill focus on the November elections. House Speaker Newt Gingrich has stepped up his criticisms about what he calls the administration's refusal to cooperate with investigators on alleged campaign finance irregularites. White House spokesman Mike McCurry countered that the administration would go about the nation's business, and leave the politics to Gingrich. But earlier he said Gingrich needed to "come back to his senses." There has been increased grandstanding on a number of issues, including tobacco legislation, UN funding and drug control.