Does political bias affect investigations conducted by the FBI?

Does political bias affect investigations conducted by the FBI?

Iowa senator Chuck Grassley discusses his letter alleging that the FBI downplayed investigations into Hunter Biden’s business dealings on ‘Sunday Night in America.’ #foxnews #sundaynightinamerica Subscribe to Fox News! https://bit.ly/2vBUvAS Watch more Fox News Video: http://video.foxnews.com Watch Fox News Channel…