In Boston, the Justice Department is pressing judges to uphold Marathon bomber Dzhokhar Tsarnaev's death sentence. In New York, it's asking jurors to impose the death penalty on a man who killed eight people in an attack on a bicycle path. President Joe Biden campaigned on a pledge to work toward abolishing federal capital punishment but has taken no major steps to that end, though the Justice Department has imposed a moratorium that means no federal executions are likely to happen anytime soon.