Former CBS “Late Show” host David Letterman had some harsh words for President Donald Trump, telling GQ that he was sickened by the election of his onetime frequent guest. Letterman, who retired in 2015 after 33 years on late-night television, said he didn’t regret having Trump on his show so often. “No, no reason to regret it,” he said.“I’m disappointed that this man is representing me and my country. It makes me sick.