In the U.S., local jurisdictions choose whether to help with federal immigration enforcement, but in Canada and Mexico, it's different. Cooperation is expected.
One of the country's most expensive races for local office is in Arizona's Maricopa County where Sheriff Joe Arpaio, a noted opponent of illegal immigration, has the toughest challenge of his career.
Despite U.S. efforts to stanch the flow, numbers are approaching the crisis of two years ago. U.S. Border Patrol agents say it's diverting resources away from catching drug and human traffickers.
According to the latest data from the Department of Homeland Security, 235,413 people were deported from the United States. That is the lowest number recorded by the Obama administration.
Once home to some of the country's strictest anti-illegal-immigration laws, Hazleton is now 40 percent Latino. The city is younger and bigger than it's been in decades, and the economy is thriving.
ICE is again changing the way it handles mothers and children who come here illegally, beginning to release most of them instead of detaining them in controversial "family-friendly" jails.
Many of the thousands of youths who arrived in the U.S. in 2014 now live with family, awaiting hearings on whether they can stay. But finding legal and mental health assistance remains a challenge.
The Coast Guard has seen a spike in the number of Cubans trying to sail to Florida. The cause, it says, is a false rumor that the U.S. will soon change its policy toward Cubans who reach U.S. shores.
Migrants from Africa and Afghanistan have poured into Calais, hoping to seek asylum in Britain across the channel. But few succeed, leaving an estimated 2,000 in limbo in the French port city.