Mistakes, but no political bias in FBI probe of Trump campaign: watchdog

US Senator Lindsey Graham (R-SC) departs following a press conference to address the Department of Justice Inspector General's report concerning the origins and handling of the 2016 election Russia investigation, on Capitol Hill in Washington, US. [Reuters]

The U.S. Justice Department’s internal watchdog said on Monday that it found numerous errors but no evidence of political bias by the FBI when it opened an investigation into contacts between Donald Trump’s presidential campaign and Russia in 2016.

The report by Inspector General Michael Horowitz gave ammunition to both Trump’s supporters and his Democratic critics in the debate about the legitimacy of an investigation that clouded the first two years of his presidency.