President Trump and Republican lawmakers say their tax legislation will increase the global competitiveness of U.S. businesses, but experts are divided over whether it will spur growth, and many are …

The separation of powers has spawned a great deal of debate over the roles of the president and Congress in foreign affairs, as well as over the limits on their respective authorities, explains this …

President Donald Trump’s rejection of the Trans-Pacific Partnership (TPP) has intensified debate over U.S. trade policy and its far-reaching effects.

The Zika virus, which has been found to cause severe birth defects, has spread across the Americas, prompting the World Health Organization to declare a global health emergency.

The Mujahedeen-e-Khalq, an exiled Iranian resistance group, continues to stir controversy despite its removal from a U.S. terrorism list.