It's painfully obvious with Trump, from
the FBI trying to honeypot Trump and Staffers to the countless other allegations like the Trump-Russia Steele dossier, that someone or some organization was out to get him for him to not regain power.
As far as Obama goes, I am only out against him and want him to pay for taking the Constitutional rights away from American citizens by droning them instead of letting them face their due process. As much as I despise their actions, or alleged actions, I support the Constitution. It's argued to have been legal under the Authorization to Use Military Force (AUMF), passed by Congreess. However, no law can supersede the Constitution.