Where in the constitution is no fact tried by a jury shall be otherwise reexamined in any Court of the US than according to the rules of the common law?

The clause you're referring to is found in the Seventh Amendment of the United States Constitution. It states that in civil cases, where the value in controversy exceeds twenty dollars, the right to a jury trial shall be preserved, and no fact tried by a jury shall be reexamined in any court of the U.S. other than according to the rules of the common law. This amendment emphasizes the importance of jury trials in civil cases and limits the power of courts to overturn jury findings.