DETROIT, Nov 20 (Reuters) - United Auto Workers President Ron Gettelfinger said on Thursday that lawmakers need to take immediate action on a $25 billion bridge loan bill to support the U.S. automakers or one or more could fail. Gettelfinger, who testified on Tuesday and Wednesday to U.S. congressional committees in support of the loans, said he would not comment on a possible compromise bill reached by Democratic and Republican senators until details were known. When told that one detail might be that the automakers would have to provide a strategic plan to get access to the money, Gettelfinger said...