Arguments over Trump's tariffs and trade wars are just the latest salvo in a heated debate that has raged since the dawn of the American republic.
A 15-year-old fleeing violence in El Salvador came to the US in 1985. Her immigration case sparked a Supreme Court decision that would affect how authorities treat children in detention.
Trump announced 'hard-hitting' new sanctions on Iran in response to the attack on a US drone. A peace studies scholar explains why sanctions rarely work.
Done right, aid fosters greater stability and boosts the economy. That reduces incentives to move away.
President Trump has discussed firing Fed Chair Jerome Powell over the central bank's interest rate policies. Research shows this kind of political meddling is usually bad for the economy.
Unlike prior waves like the enslaved people on the Underground Railroad or Vietnam-era war resisters, they are children whose parents fear deportation after spending years in the United States.
A presidential visit to Kingston, Ont. -- like the one FDR paid in 1938 -- could once again play a role in bridging relations between Canada and the United States.
President Trump plans to put a 5% tariff on every Mexican good that crosses the border unless Mexico does more to reduce the flow of migrants.
The collective public health of Canada, the United States and Mexico will take a hit if the new NAFTA becomes law.
Only three countries charge people who seek asylum fees. The rationale for not doing that is clear.
Trump's embrace of bilateralism in trade relations has pernicious long-term consequences, including ratcheting up the odds of violent conflict.
North Korea is a major military threat to the US and its Asian allies, but exactly how powerful are its nuclear weapons? An earth scientist explains why it's hard to answer this question.
The Trump administration plan to expand offshore oil and gas production along US coastlines faces serious roadblocks. But there are smarter ways to pursue 'energy dominance.'
Air quality in the US has improved greatly since 1990, but a new report finds progress stalling in some cities. Meanwhile, the Trump administration is rolling back air pollution controls.
The US indicted WikiLeaks co-founder Julian Assange for conspiring to hack into a government computer. But the prosecution of Assange may also pose a risk to the rights of journalists in the US.
Travel along the U.S.-Mexico border and meeting migrants can build empathy for people without papers.
The US needs to review whether a security agenda based on US priorities will solve problems in sub-Saharan Africa.
International law has deep connections to structures of power and inequality. Thankfully, committed jurists like Fatou Bensouda are fighting oppression through their unapologetic acts of resistance.
Are health risks from air pollution less serious than we think? Mainstream scientists call this a fringe view, but it's getting high-level attention at the Environmental Protection Agency.
Despite two major journalistic investigations of Fox News' so-called 'empire,' the idea that Fox News wields immense political power in the US and in the White House falls apart under scrutiny.