Trump ally to retire, opening US Senate door for Romney

Mr Mitt Romney is one of President Donald Trump's harshest critics. Mr Orrin Hatch is credited with helping push the tax overhaul in Congress.
Mr Orrin Hatch is credited with helping push the tax overhaul in Congress.
Mr Mitt Romney is one of President Donald Trump's harshest critics. Mr Orrin Hatch is credited with helping push the tax overhaul in Congress.
Mr Mitt Romney is one of President Donald Trump's harshest critics.

Senator Hatch says he will not seek re-election in November