Republican Sen. Katie Britt of Alabama delivered her party’s official response to President Joe Biden’s State of the Union on Thursday night and offered viewers a horrifying glimpse of the far-right Christian nationalism now embedded in the GOP, which has succumbed fully to Donald Trump’s fascist vision for the country. Speaking in hushed tones and intermittently flashing a menacing smile, Britt—the former CEO of an Alabama corporate lobbying organization and the wife of a lobbyist—said from the comfort of her posh kitchen inside her 6,000-square-foot mansion that she understands and sympathiz…