President Obama will become the first sitting president to visit Hiroshima, Japan, the site of the first nuclear bomb dropped by American forces. Before the end of the Supreme Court term in June, the justices will issue decisions on immigration, affirmative action and former Virginia Gov. Bob McDonnell's conviction. The Washington Post's Dan Balz reports on criticism RNC Chair Reince Priebus and DNC Chair Debbie Wasserman Schultz are facing from their respective parties for their handling of the primary process. The 2016 battleground map shows a heavy advantage for Democrat Hillary Clinton, but Trump is hopeful he can win in Arizona and Pennsylvania. And AP's Lisa Lerer reports on the California primary and how expensive the race will get.