The United States of America, bordered by Canada to the north and Mexico to the south, is Earth's third largest country with a total land/water area of 9,833,517 square kilometers. It's population is 326,367,019 making it the most heavily inhabited country in the western hemisphere (more than 2.5 times greater than Mexico, North America's second most populated country). It enjoys status as the planet's most powerful nation state, with a strong economy, and rapid advances in technology and as one of the most developed nations it is a top destination for emigrants from across the Americas as well as around the world.
Quality of Life: Overall the quality of life index in the United States is extremely high (191.27), ranking behind only Switzerland. This is an obvious pull factor as safety (high) and pollution levels (governmental controls, though we in the east are impacted by prevailing weather patterns), two key components in this index, make the U.S. a great place to live.
Gross National Income (GNI) Per Capita: GNI is a measurement of a country's income, including all money earned by residents and businesses combined divided by the total population. Citizens of the United States rank fifth in the world with an average of $34,391.53 annually (including funds migrants send back to their families) with Canada (16) home to North America's next highest average ($21,942.03). Total GNI for the U.S. (nearly $9.8 trillion!) is more than twice as much as Japan's. Earning power is another advantage of living in America and is a pull factor for many people looking to improve their lives.
Average Years of Schooling: The amount of time American students spend in the classroom (12 years on average) is the highest in the world, perhaps the most important pull factor of all for those considering immigration to the U.S. for a better life and more opportunities for their children.
The fact is incontrovertible that the United States of America is an excellent destination for emigrants looking for greater economic and social opportunities for themselves and their families.
Give me your tired, your poor, your huddled masses yearning to breathe free.