NEW You can now listen to Fox News articles! Health and Human Services Secretary Robert F. Kennedy Jr. defended comments about President Donald Trump 's mental health following a tense exchange during a congressional hearing. During Friday's hearing, Rep. Mark Takano (D-Calif.) addressed Trump's recent social media posts, pointing to an AI-generated image that critics said depicted him as Jesus Christ and his criticism of Pope Leo as evidence he is mentally unwell. "Millions of Americans are questioning this president’s mental fitness , his emotional stability, and whether he can carry out the duties of his office. Do you share their concerns about his mental health?" Takano asked Kennedy. Kennedy began to answer, saying, "I call your attention to..." before the representative cut him off and demanded a more direct response.…