Witnesses set to testify to Congress about the “weaponisation” of the US government on Thursday have links to far-right groups and a history of supporting conspiracy theories about coronavirus vaccines and the January 6 insurrection, a congressional watchdog has warned. In February, Republicans in the House of Representatives created a panel on what they say is the politicisation of the FBI and justice department against conservatives. Critics saw it as an attempt to entangle Joe Biden in spurious investigations ahead of next year’s election. On Thursday the judiciary subcommittee, chaired by Representative Jim Jordan of Ohio, an ally of former...