nd will be implemented until June 15," Kamaljeet Rattan, head of corporate communications, told Dow Jones Newswires. Another airline executive, who didn't want to be named, said some flights to London and Tokyo have been cancelled while a few local flights have been clubbed. Since December, oil suppliers have put Air India on a cash-and-carry basis to buy jet fuel, meaning that the airline has to pay each time it refuels its aircraft. Airlines normally have a 90-day credit period to pay their fuel bills, but oil companies refused to follow that structure with Air India after it defaulted on some payments. Rattan said Air India pays INR160 million as its daily fuel expense but is unable to pay more, even as jet fuet from Democrats, who charge it would "end Medicare as we know it." The Senate rejected it in a vote last week, but also unanimously struck down an alternative plan proposed by President Obama.  Democrats said they wanted to leave it off the table while Vice President Biden leads a bipartisan group of senators to come up with a new budget that would include cuts in spending that would satisfy lawmakers who don't want to increase the nation's borrowing limit without reducing government's size. "The one thing we can't do is nothing," McConnell said. "The president, to his credit, is at the table. ... We're going to negotiate the contours of the plan in these negotiations. I'm personally very comfortable with the way Paul Ryan would structure it in the out years, but we have a Democratic president. We're going to have to negotiate with him on the terms of changing Medicare so we can save Medicare." Appearing on the same program, Sen. Chuck Schumer, D-N.Y., called on Republicans to abandon the House Medicare plan, noting an analysis by the nonpartisan Congressional Budget Office that says it would require seniors to shoulder an increasingly large share of their health care costs. Schumer said there are only three options -- doing nothing, the Ryan plan or a Democratic vision that preserves benefits and changes "delivery systems," but does "not let providers