Sometimes, you need to decide for yourself when it's time to pull up stakes and fold your cards.

NPR: Political Junkie: Obama's Former Pastor Speaks Out

Among older Americans who pull up stakes, a "large majority" settle within 20 miles of their previous homes, according to a 2009 Boston College study.

WSJ: Why Downsizing Your House May Not Solve Your Retirement Problems

All these people had the get-up-and-go to pull up stakes and come here, a temperament that made them different from their friends and relatives who stayed home.

FORBES: A Nation Built on Immigrant Genes