Kevin O'Connor cited doctor-patient confidentiality and his Fifth Amendment right against self-incrimination in deciding not to answer questions from Republicans on the House Oversight Committee.
U.S. President Donald Trump singled out Brazil for import taxes of 50 per cent on Wednesday over its treatment of former president Jair Bolsonaro, suggesting that personal grudges rather than simple economics are playing a part in the U.S. leader's use of tariffs.
