Two nationwide campaigns targeting illegal migrants have resulted in 1400 arrests, 330 prosecutions and 260 removals.
Several states have passed tough new laws banning illegal migrants from using their public services.
Last month 14 illegal migrants, mostly Pakistanis, suffocated in the back of a lorry taking them to Greece.
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Initially, the illegal migrants now in the U.S. would mostly "avail themselves" of the guest-worker system, says Mr. Rubio.
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Tens of thousands of illegal migrants are thought to cross Turkey every year.
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The only official published estimate for illegal migrants in the UK puts the total as somewhere between 310, 000 and 570, 000.
Against his party's national policies, he worries about curbs on welfare benefits and favours an amnesty for some illegal migrants.
Around half a million illegal migrants try to cross Mexico each year in a bid to reach the United States.
The UK Borders Agency said the illegal migrants in France were not queuing to get into Britain, they had been "locked out".
Greece has announced plans to build a 12km (eight-mile) fence along part of its border with Turkey to keep illegal migrants out.
Deportations from America are rising fast (a record 361, 000 illegal migrants were kicked out in 2008, up from 319, 000 the year before).
Argentina has lifted most restrictions on immigration from South America, again guaranteeing access to public health and education, even for illegal migrants.
Many Americans in border states support cracking down on illegal migrants, and Mr Obama's Democratic Party faces difficult mid-term elections in November.
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Spanish officials say that traffic in illegal migrants and substances goes hand-in-hand.
Traditionally, summer was the season when illegal migrants braved the night-time crossing.
"It is the largest ever such operation to rescue illegal migrants travelling in inhumane conditions, " a police spokesman told the AFP news agency.
Instead of worrying about drugs, terrorists or illegal migrants, some well-placed Singaporeans see Johore as a base to expand its manufacturers and those of foreign firms.
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Greece has become the major entry point into the EU for illegal migrants and the UN refugee agency, UNHCR, has complained that Greek reception centres are inadequate.
An enthusiasm for immigration, which has included advocating an amnesty for some illegal migrants, stems as much from his family tree as from his position as mayor of London.
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The Home Office describes France "as one of our closest European partners in fighting illegal migrants" and says "our shared determination has already created one of the toughest border crossings in the world at Calais".
And Israeli authorities announced last Tuesday that they'd detained 240 illegal migrants -- all of them Sudanese -- as part of the controversial plan, with another 300 people volunteering to return to their country of origin.
Dana Diminescu, of France's Ecole des Hautes Etudes en Sciences Sociales, recently discovered that 11 villages in the Oas region of northern Romania, a poor farming area of about 70, 000 people, had generated a regular pattern of illegal migrants to Paris, almost all of whom eventually went back home.
EU. Central to this was a deal to legalise the presence in the United States of millions of illegal Mexican migrants.
Bervelyn, who had travelled from Hertfordshire to attend the rally, said prolonging their illegal status stopped migrants from working and helping the country to be prosperous.
Inevitably, many have made their way from north Africa or the Middle East to look for opportunities in Europe, whether as legal migrants, illegal workers or asylum-seekers.
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But most surveys suggest that migrants, even illegal ones, bring many benefits to their hosts.
The Census Bureau projects that in 2007 migrants, legal and illegal, will increase the U.S. population by one person every 27 seconds.
All this drama has diverted attention from another big change in recent years: the largely peaceful absorption of a huge number of migrants, both legal and illegal.
Immigration has three aspects - desired economic migrants, sheltered asylum seekers and illegal immigrants.
The Burmese government, on the other hand, considers them as illegal immigrants from Bangladesh and they remain stateless migrants in Bangladesh and Malaysia.
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