It was not infidelity that moved another relative to tears but fidelity at any cost. We were breezing through the family photo album when she pointed at a picture from Saudi Arabia that showed her husband at an evangelical church. Church? That is a ticket to deportation or worse. Alarmed that her slip might place him in greater dangers, she started to sob. “I can’t stop him — that’s where he found his happiness,” she said. When I reached him, he encouraged me to mention his preaching, saying it was his way of thanking God for the chance to work abroad. “I promised the Lord I’ll share the Gospel under any circumstance,” he said.That's from a wonderfully written (and long) essay on migrant workers "A Good Provider Is One Who Leaves" by Jason DeParle in the New York Times Magazine.
Here's another paragraph:
Earlier waves of globalization, the movement of money and goods, were shaped by mediating institutions and protocols. The International Monetary Fund regulates finance. The World Trade Organization regularizes trade. The movement of people — the most intimate form of globalization — is the one with the fewest rules. There is no “World Migration Organization” to monitor the migrants’ fate. A Kurd gaining asylum in Sweden can have his children taught school in their mother tongue, while a Filipino bringing a Bible into Riyadh risks being expelled.
The growth in migration has roiled the West, but demographic logic suggests it will only continue. Aging industrial economies need workers. People in poor countries need jobs. Transportation and communication have made moving easier. And the potential economic gains are at record highs. A Central American laborer who moves to the United States can expect to multiply his earnings about six times after adjusting for the higher cost of living. That is a pay raise about twice as large as the one that propelled the last great wave of immigration a century ago.