When President Obama convened a town-hall meeting in Rio Rancho, N.M., last month, he wanted to talk about credit card reform. But many in the crowd had a different agenda. ‘So many people go bankrupt using their credit cards to pay for health care,’ the first questioner said to applause. ‘Why have they taken single-payer off the plate?’ The ‘single-payer’ activists had struck again. As Obama and congressional Democrats work to hammer out landmark health-care legislation, they face increasingly noisy protests from those on the left who complain that a national program like those in Europe has been excluded from the debate. The White House and Democratic leaders have made clear there is no chance that Congress will adopt a single-payer approach — named for the idea that a single government-backed insurance plan would pay for all Americans’ medical costs — because it is too radical a change. That has not dissuaded single-payer activists, who have spent months hounding Democratic lawmakers and organizing demonstrations, including one that resulted in 13 arrests at a Senate hearing last month. The offensive continues this weekend with plans to swamp a series of ‘house parties’ on health care hosted by […]