There are no reliable estimates of the net effect of migration on the South African economy.

ECONOMIST: A ticket to prosperity

An issue that ought to arise at the FORBES GLOBAL CEO Conference on Sept. 24-26 in Hong Kong is the effect of extraordinary migration levels in recent decades.

FORBES: Magazine Article

It's difficult to show a perfect cause-and-effect relationship when it comes to migration patterns, as individuals and families move for a wide range of reasons.

FORBES: America's Fastest-Growing Cities