Democrats did do similar things with Libya, and Obama increased the amount of troops in Afghanistan by 50% less than a month into his presidency.

Libya arguably would have been better off without U.S. intervention, but that was preceded by widespread uprisings that were either a civil war or close to it. It’s not really comparable to the OAS ginning up false issues with a recent election and eventually deposing the just-elected president, all directly contrary to the will of the people. Similarly, the surge in Afghanistan was an attempt to end a war we were already fighting, as just flat-out leaving could easily leave the country in a state like Libya’s in today. That’s also not all that comparable to engineering a coup against a popular government at peace. These events aren’t carbon copies of one another.

Looking at the vote for the invasion of Iraq, over half of Democratic senators voted for it

Voting for an invasion is not the same as inventing the reason for that invasion out of thin air. Going along with it is bad, but not nearly as bad as forging a ton of intelligence, crafting a propaganda campaign to manufacture consent, and then browbeating opponents with “you hate America” just two years after 9/11.