President Barack Obama is to release new rules on Monday designed to reduce carbon pollution from power centers.
Five years ago, work crews successfully stopped a major oil spill in the Gulf of Mexico.
The United States has promised not to give up its fight against human trafficking.
The latest voter study shows American businessman Donald Trump with a big lead in the Republican Party presidential race.
The United States government said Thursday it would investigate the killing in Zimbabwe of a protected lion.
U.S. lawmakers urged top administration officials Wednesday to provide details about the group that is to enforce a nuclear deal with Iran.
U.S. President Barack Obama ended his East Africa trip Tuesday with a speech to the African Union.
The lawyers for an Israeli spy said Tuesday that U.S. officials have decided to release him in November.
Carly Fiorina is the only Republican woman so far running for president.
Lindsey Graham is a Republican senator from South Carolina and a military veteran.