WASHINGTON, United States (AFP) — A senior Republican lawmaker on Sunday challenged President Donald Trump to prove his claim that his phone was tapped by predecessor Barack Obama during last year’s campaign — or else retract the unsubstantiated allegation. Senator John McCain, a frequent Trump critic, issued his demand in an interview with CNN. “The president has one of two choices, either retract, or to provide the information that the American people deserve,” McCain said. […]