The U.S. and Brazil may work together to investigate Sunday's attack on Brazil's congress and other federal buildings. Reuters reports lawmakers from both countries signed a joint statement condemning political violence. Secretary of State Antony Blinken said "if" Brazil formally requests U.S. help, Washington would respond "expeditiously." #cbsnewsmiami #news #politics #geopolitics #unitedstates #brazil #protest #protests #politicalviolence #bolsonaro #trump