US President Donald Trump announced that White House Chief of Staff Susie Wiles has been diagnosed with breast cancer.Trump wrote on Truth Social: "Susie Wiles is an incredible Chief of Staff, a great person, and one of the strongest people I know but, unfortunately, she has been diagnosed with early stage breast cancer, and has decided to take on this challenge, IMMEDIATELY, as opposed to waiting. She has a fantastic medical team, and her prognosis is excellent!Read More