'Why do you consider Obama a successful president?'
He 'successfully' financed, supplied, armed, trained, protected, defended, un-Constitutionally went to war for, and helped terrorists take over their own countries.
He 'successfully' armed Mexican drug Cartels.
He 'successfully' aided in the un-necessary deaths of Americans at home and abroad.
He 'successfully' set a new record for the most illegal non-compliance with the FOIA and Federal Records Act.
He 'successfully' remained true to his vow to fundamentally change the US (Thank fully Trump has erased the vast majority of that 'Legacy'....)