Trump Lied About Obama Wiretapping Him, DOJ Investigation Concludes

Nearly 6 months ago, Donald Trump made the outlandish accusation that Barack Obama had his “wires tapped” at Trump Tower in a tweet that sent the right wing into a frenzy. But after a lengthy investigation by the Department of Justice, they concluded that no such wiretap existed. What was Trump’s motive here, and what made him decide to make this claim in the first place?