Trump still has enough loyal GOP senators to stop impeachment. The possibility is that enough abuse can be unearthed to flip those loyalists. However, the GOP have already shown willingness to disregard the abuses so far, so probably worse actions are needed. His numerous actions on Putin's behalf certainly show a significant likelihood that he is, indeed, a Putin asset. Proving it could happen, and that would be worse. But for the GOP, would it be worse enough? The GOP are really, themselves, traitors for even considering Trump to be qualified.(In the sense that the GOP would elect a Trump to achieve their own personal goals, and thus placing self ahead of the country).