Arpaio became a nationally known political figure over the past dozen years as he took aggressive action to arrest immigrants in the country illegally.
US President Donald Trump on Thursday announced the easing of curbs on a group of powerful greenhouse gases commonly found in refrigerators and air conditioners.
Amazon founder Jeff Bezos said Wednesday the bottom half of earners should pay zero federal income taxes — while taking a swing at tax-the-rich pols and calling out government waste.