KEY WEST, Fla. — For more than a month, Bobby Kuchinsky arrived at his restaurant each morning worried about whether he still had enough staff or if this might be the last shift for some of his Haitian workers, who have spent over a decade as cooks, busboys and oyster shuckers.Loss of work authorization sows confusion for thousands of Haitian immigrants and their US employersOn Tuesday, he suspended six of them after they lost authorization to work in the U.S.Kuchinsky and thousands of other businesses owners and managers are living in a state of constant uncertainty because confusion clouds the...