As reported by
Harper's Weekly March 6, 1875:
"In December 1874, the House Ways and Means Committee initiated an investigation of the possible bribery of government officials by the Pacific Mail Steamship Company during the firm’s quest to secure a federal subsidy. The House bookkeeper testified that 60 congressmen had each deposited a thousand-dollar bill in their accounts concurrent with the passage of the Pacific Mail subsidy...
The hearings, in fact, produced a pattern of witnesses admitting that large amounts of money had changed hands, while disavowing that such acts constituted bribery, and the committee continuing its disinterest in identifying the congressional beneficiaries of the payoffs. One witness, for example, confessed to accepting $56,000 (more than the president’s salary) from Pacific Mail to persuade a senatorial friend to vote for the subsidy, but the witness denied that the payment was a bride{sic}. The investigation also revealed that Pacific Mail had paid a reporter and an editor of the Washington Chronicle to print favorable news stories and editorials about the company. With overwhelming evidence against Pacific Mail, the House voted on January 25, 1875, to repeal the company’s subsidy, and the Senate followed suit on February 23. No congressmen were indicted..."