President Trump and his critics are falling into camps very reminiscent of a classic philosophical debate of the 1970s: two different conceptions of moral duty.

Trump's unprecedented plan to fund the border wall is enabled by decades of congressional negligence.

The artist's massive new work "Good Fences Make Good Neighbors" examines the plight of refugees. But can it change public opinion?

If GOP lawmakers want to keep the lights on in the fall, they'll have to neutralize Trump. That means working with Democrats.

Roughly once a year, the border wall opens to allow a handful of immigrants to reunite with their families on the other side.

Justin Trudeau tried to befriend Trump, but bullies only respect people who fight back. That's why Trump is beating Trudeau to a pulp over trade.

The biggest hurdle to the president's proposal isn't money or geography. It's private landowners.

His economic policies, like a potential tax on imports from Mexico, would most hurt the very voters he claims to champion.