Trade between the world’s two biggest economies has ballooned in recent decades, bringing significant benefits but also perils that have led to calls to rethink the relationship.

The alliance with Japan has been the cornerstone of U.S. security policy in East Asia for decades. Now, Japan’s role in global security is growing as challenges from China and North Korea mount.  …

With its comparatively open and well-regulated immigration system, Canada remains a top destination for immigrants and refugees.

The United States accepts hundreds of thousands of foreign workers each year in a variety of industries. Persistent U.S. labor shortages and accusations of abuse have reenergized the debate over the scale of these programs.

Comprehensive immigration reform has eluded Congress for years. With border crossings at a record high, how are policymakers responding?