Fearing was appointed the United States counsel for Washington County in 1788 and a probate judge in 1797. He was a member of the Territorial legislature 1799-1801. He was elected as a Federalist a Delegate to the Seventh Congress (March 4, 1801 – March 3, 1803). He was not a candidate for renomination in 1802. He resumed the practice of law and engaged in fruit and stock raising. He was appointed associate judge of the court of common pleas in 1810 and served seven years. He was appointed master in chancery in 1814. Fearing was elected a member of the American Antiquarian Society in 1816.
He died at his home near Marietta, Ohio in 1822. He was buried in Harmar Cemetery, Marietta.
^Hildreth, S. P.: Pioneer History: Being an Account of the First Examinations of the Ohio Valley, and the Early Settlement of the Northwest Territory, H. W. Derby and Co., Cincinnati, Ohio (1848) p. 232.