BYRON YORK: Obama faces defeat on pipeline as Dems defect. “While much of the political world obsesses over Twitter fights and Seamus the dog, Barack Obama has set himself up for a high-profile defeat on one of the most important issues of the campaign. The president has put his feet in cement in opposition to the Keystone oil pipeline. But on Capitol Hill, more and more Democrats are joining Republicans to force approval of the pipeline, whether Obama wants it or not.”