sentences:  He was not a candidate for renomination in 1880, and began to suffer business setbacks, largely engineered by Republicans including former Governor J. Gregory Smith, who were part of Vermont's business and banking community and resented Barlow's insurgency against the dominant Republican hierarchy.Barlow was implicated  in the star routes mail scandal of 1876 in which he was identified as one of the most successful mail contractors in the country.He was called to testify before Congress several times regarding the scandal.