What argument did Hamilton use to support lifetime tenure for justices?

Hamilton argued for lifetime tenure for justices primarily to ensure that judges would be insulated from political pressures and biases. This independence is crucial for maintaining an impartial judiciary, which is necessary for upholding the rule of law and protecting individual rights. Lifetime appointments allow justices to make decisions based on their interpretation of the Constitution and the law rather than succumbing to the whims of political changes or public opinion. This structure is designed to foster a judiciary that can act as a check on the legislative and executive branches, reinforcing the principle of separation of powers. Additionally, it helps prevent the erosion of judicial integrity, as justices are not swayed by the need to seek re-election or reappointment, allowing them to focus on justice rather than political ramifications.