By Steve Holland WASHINGTON (Reuters) -U.S President Joe Biden on Monday said his remark that Russian President Vladimir Putin should not remain in power reflected his own moral outrage at Russia’s invasion of Ukraine, not a U.S. policy shift. Biden faced pressure to speak about the comment after it generated a flood of questions as to whether the United States had changed to a policy seeking regime change in Moscow. “I wasn’t then nor am I now articulating a policy change. I was expressing moral outrage that I felt, and I make no apologies,” he told reporters at the White House. He said his o…