Did President Johnson veto laws passed by Congress? (Such as expanding the Freedmen's Bureau and the Civil Rights Act of 1866)

Yes, President Johnson did veto several laws passed by Congress during his presidency, including both the expansion of the Freedmen's Bureau and the Civil Rights Act of 1866. Johnson believed that these laws were unconstitutional and that they exceeded the powers of Congress. However, Congress was able to override his vetoes and pass the legislation without his approval.