WASHINGTON — Inside a closed-door meeting of House Republicans on Tuesday, Rep. Jen Kiggans, a swing district member who is a linchpin of the party’s narrow majority, stood up and made a plea. “Doing nothing on health care is not the right answer,” the Virginia Republican later told NBC News, summing up her message to colleagues. “I would really appreciate if we could have a timeline because we know that the end of the calendar year is coming, and I don’t want to see people’s premiums go up. I