美国有线新闻 CNN 美最高法审理特朗普政府旅行禁令 6月公布最终裁决（在线收听）

The U.S. Supreme Court heard arguments yesterday on what could be the most significant case of its current term. It concerns the restrictions that the Trump administration put in place last year on people coming to the U.S. from seven countries.

There have been three versions of what's been called the travel ban. They've been changed as conditions have changed, and as legal challenges to the bans have played out.

Most of the countries in the ban have Muslim majority populations and while he was on the campaign trail, then-presidential candidate Donald Trump had called for a shutdown of Muslims entering the United States. So, critics have argued the ban is discriminatory and unconstitutional.

Most of the Muslim world is not restricted in the travel ban and the Trump administration says the restrictions that are in place are necessary for national security. So, supporters have argued that the president has the constitutional authority to keep certain non-citizens out of the country.

The Supreme Court's decision on this is being closely watched across the country. It could be looked at future presidents when they shape their immigration policies, as well as lower courts if a case involves what a candidate says on the campaign trail.

Experts say a president does have power over immigration and national security. This case could more clearly define that. The high court's decision is expected this June.

AZUZ: Yesterday, France's leader addressed a joint session of U.S. Congress, 58 years to the day after one of his predecessors, former French President Charles de Gaulle, did the same thing.

Current French President Emmanuel Macron was wrapping a three-day state visit to the U.S. Capitol. He was the formal guest of President Trump.

The two leaders have a close relationship, but that doesn't mean they always see eye to eye on world issues.

EMMANUEL MACRON, PRESIDENT OF FRANCE: By polluting the oceans, not mitigating CO2 emissions, and destroying our biodiversity, we are killing our planet. Let us face it. There is no planet B.

As for Iran, our objective is clear. Iran shall never possess any nuclear weapons.

Closing the door to the world will not stop the evolution of the world. It will not douse but enflame the fears of our citizens. We have to keep our eyes wide open to the new risks right in front of us.