Any reasonable person would define treason as aiding and abetting an enemy.
Any reasonable American would consider Vladimir Putin an enemy of America and its allies, which include the Ukraine, which Russia under Putin has invaded.
Trump's withholding of military assistance to the Ukraine in order to get "dirt" on Joe Biden and his son is aiding and abetting Putin's invasion.
To me this sure looks like treason.
Disclaimer: As submitted to the Arizona Daily Star.