By Duncan Miriri NAIROBI (Reuters) - President Barack Obama's half-brother, Malik Obama, says he will vote for Republican nominee Donald Trump in the U.S. election in November because he likes the candidate and he is unhappy with his brother's leadership. Malik, who is in his 50s, told Reuters by phone from Obama's ancestral home of Kogelo in western Kenya that he supports Trump's policies, especially his focus on security. Trump's stance against Muslims coming in to the United States was understandable even to Muslims like himself, Malik said.