China has halted retaliatory tariffs that it imposed on a range of US agricultural products, after Washington officially halved its fentanyl-related levies on Chinese goods.

At issue is whether the White House exceeded its authority under the International Economic Emergency Powers Act, or IEEPA, when it imposed tariffs of 10% to 50% on dozens of countries.

As the Supreme Court hears arguments in a major test of President Trump's executive powers and his ability to impose tariffs, Rep. Jamie Raskin tells Dana Bash that "the conservative justices may fina...

Justice Neil Gorsuch was among the Trump appointees who seemed skeptical Congress could give the president powers that are usually reserved for the legislative branch, such as regulating trade.