Washington (AFP) – Donald Trump and his ex-wingman Mike Pence, who went from White House partners to bitter rivals, will hold duelling rallies Friday in Arizona, where a state primary could serve as an early battleground in their potential 2024 showdown. The convergence of campaign events comes a day after a Congress hearing investigating the US Capitol insurrection, in which a White House security official said members of Pence’s Secret Service detail feared they would die as rioters stormed the building. Trump, who like Pence is considering running for president in 2024, has savaged his form…