I wonder if people are bringing up the Obama birther thing again, because they think that was a winning strategy in 2016? And, maybe it still would be a winning strategy if Obama was running, but he's not, so it won't work.
Obama want running in 2016 either. Does your mind never tire of banalities?
You're right, Obama didn't run in 2016, yet the GOP and Trump kept bringing him up, while painting Hillary as Obama part II.