And history will remember Merrick Garland as an accessory to America's downfall for not prosecuting Trump's very obvious federal crimes and instead leaving it up to the states. Possibly a willing one, if history is feeling particularly sassy.Nope, because this is a state matter and not a federal matter. The states can choose to not allow extradition in much the same way nations can: if they feel the district will not properly follow the law or honour the requirement for a fair and impartial trial.
So not obstruction until after the subsequent investigation into the refusal to allow extradition shows that it was entirely biased in favour of trump, but by then: no one will care.