A Republican congressman representing a swath of New York’s Long Island has come under fire following a report that he put both his mistress and fiancée’s daughter on his payroll—in potential violation of House ethics rules. Four people familiar with the relationship told The New York Times that Rep. Anthony D’Esposito had an affair with a woman named Devin Faas, then gave her a part-time job in his district office in April, for which she collected $2,000 a month. His longtime fiancée’s daughter began working for him even earlier, according to payroll records obtained by the Times , with D’Esposito bringing her on as a special assistant shortly after he took the oath of office last year. The…..