Former President Donald Trump withdrew his endorsement of U.S. Senate Republican hopeful Mo Brooks' struggling campaign on Wednesday, dealing a crippling blow to the ambitions of one of his staunchest allies in the U.S. Congress. #DonaldTrump #MoBrooks #News #Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en