Answer the following statements true (T) or false (F)

1. In recent years, immigration has contributed an insignificant amount to the U.S. population growth.
2. The main driver of economic immigration is the opportunity to improve earnings and living standards.
3. The majority of international migrants move to countries relatively close to their home countries because close proximity reduces the cost of the move relative to anticipated benefits.
4. Other things equal, larger wage differences between nations tend to increase the flow of immigration toward the country with higher wage opportunities.

1. F
2. T
3. T
4. T