The media didn’t “Miss” vetting Obama..they didn’t vet him on purpose because they saw Obama as the most far left progressive commie future President EVER and they wanted to make sure he won at all costs
It is first and foremost the job of opposition political parties and candidates to vet their opponents. Leaving that job to the liberal mainstream media is always a mistake. If the opposition uncovers dirt and scandal, the mainstream media will cover it if for no other reason than tto make more advertising money off the ratings.