David Limbaugh, political commentator and brother of Rush Limbaugh, thanked Americans for their support following his brother’s passing on Wednesday after a lengthy battle with lung cancer. “Im not ready to speak yet but I Im so proud of my amazing, loving brother [sic],” he wrote in a heartfelt Twitter post. “Thousands of you have shared how much he meant to you.” “My brother was the real deal. I can’t describe how sad I am but also how proud I am of my big brother. I love and adore you Rush. Thank you all.” Conservative radio host Rush Limbaugh died at the age of 70 on Feb. 17. His wife, Kathryn Adams Limbaugh, announced his death on Wednesday morning. She told listeners at the beginning of Limbaugh’s radio show that he had been battling stage four lung cancer while continuing to broadcast his radio show. He passed away at his …