Some 11 million people have come to the United States, or stayed here, illegally, according to researchers, the number may actually under-represent the number of people who are affected. In many cases, U.S. citizen children are also disadvantaged by their undocumented parents.
The reality of unlawful immigration over the past decade or more has been families separated between the United States and the home country. For many Mexican families, the prospect of immigration reform in the U.S. brings to possibility of a much delayed family reunion.
For families separated between Mexico and the United States, the border fence can seem insurmountable. And it often is. But in a park near San Diego, the fence has become a place where those divided families meet and catch glimpses of one another -- through the fence.
Mexican entrepreneurs are looking to north to build on successes their businesses are already having in their home country. But this can be difficult. So now, both Mexican and American officials are seeking ways to augment these ties -- for the benefit of both countries.
Micronesians have come to the United States in larger numbers since 1986. Most settle in nearby Pacific islands, like Guam or Hawaii. But a few come a little farther. To Missouri, for example, where a large Micronesian population has grown up.
Myanmar's ethnic Karen minority are trying to find their footing. Despite democratization in Myanmar, there remains violence in their homelands. Many have settled in the United States, where they're able to rebuild and improve their lives.
Republicans in the U.S. Senate this week have indicated they'll allow votes on two bills — one that would reform the country's immigration system and another that would provide for background checks in all commercial gun sales. Whether they'll pass, though, remains to be seen.
Filipinos make us the second largest group of immigrants to the United States. Many came after serving in the U.S. military during World War II. But because there are so many, getting visas to bring adult family members to the United States can be nearly impossible -- with the wait for most stretching a dozen years or more.
Texans who live in the border area say security in the region is tight enough. They don't want a bigger fence, or a wall, and they say they've got enough drones and helicopters. And local police point to statistics that show their crime rate is far below big Texas cities. But is the border safe enough?
Iranian-Americans have been widely successful in the United States. But they've largely been absent from the political scene. Now Cyrus Habib is changing that. He's currently the highest ranking Iranian-American elected official -- newly elected to the Washington Legislature.