Trash in parts of Montgomery County went uncollected Monday and Tuesday when county residential trash haulers struck to protest the use of an immigration enforcement threat by Potomac Disposal against the   employees -- who are mostly Latino -- currently negotiating for affordable health care and a fair wage increase. About 50 Potomac Disposal workers were on strike Monday and Tuesday from the 57-member crew contracted to pick up residential trash in Montgomery County. The strike disrupted residential trash service to the Potomac, Bethesda, Chevy Chase, Rockville, Wheaton, and Silver Spring neighborhoods that normally expect Monday or Tuesday trash, recycling and yard waste pick-up. The striking workers -- members of Laborers Local 657 -- are demanding that Potomac Disposal managers rescind their immigration enforcement threat and return to the negotiating table in good faith. "After employees refused to back down from demands for affordable health care, they reported for work last Friday and found new I-9 forms clipped to their time cards along with a demand that all employees bring in identifying documents to re-verify their immigration status," reports MidAtlantic LIUNA. "Workers perceived this act as an implicit threat, and are justifiably upset that their employer would counter their reasonable request for health care by seizing upon their immigration status as a weapon in contract negotiations." The workers have offered to return to work on Wednesday but will not make the decision on whether to do so until they meet with management Wednesday morning.