One immigration pressure group estimates 50, 000 people will move to the UK every year from Romania and Bulgaria once the movement restrictions expire at the end of the year, but Mr Hague said any attempt to estimate the number would be "guesswork".
Illegal immigration puts pressure on our schools and hospitals.
UKIP's local election manifesto, concentrates on its flagship policy of ending "open door" immigration and putting pressure on the government not to lift restrictions on workers from Bulgaria and Romania on 1 January, which proved a successful formula in Eastleigh.
Labour MP Frank Field and Conservative Nicholas Soames - who campaign on the issue of immigration - said it was "more evidence of the pressure that uncontrolled immigration will place on our population, and therefore our quality of life".
Family preferences account for two-thirds of all legal immigrants, crowding out work-based immigration and placing increased pressure on social services.
WSJ: Jeb Bush and Clint Bolick: Solving the Immigration Puzzle
The absence of a meaningful avenue of access increases the pressure for illegal immigration.
WSJ: Jeb Bush and Clint Bolick: Solving the Immigration Puzzle
Second, the bracero program, a temporary annual guest worker permit for low skilled Mexican farm workers, was discontinued on the eve of the Immigration Act of 1965 due to labor union pressure.
"Controlled migration has benefited the UK economically, socially and culturally, but when immigration gets out of control, it places great pressure on our society, economy and public services, " she told MPs.
And Mr D'Alema will find it equally hard to tackle the countless lobbies that make any reform in Italy so difficult: from rail workers to postal workers, from school-teachers to the officer corps, from politically motivated magistrates to the Christian pressure-groups that make sure the immigration laws are not implemented (this week, once again, hundreds of people landed illegally on Italy's shores).
Such policies may not end illegal immigration, although they would certainly remove some of the pressure.
Still, Goeas thinks there will be public pressure for members of Congress to keep at it on immigration.
The documents also show that Carol Lam, the U.S. attorney in Southern California, was under intense pressure from members of Congress for not pursuing enough illegal immigration cases.
The Democrats retort that Mr Graham is using Mr Reid's immigration initiative as an excuse and has merely succumbed to his own party's pressure to stop working across the aisle.
ECONOMIST: The consensus-wrecking impact of the coming elections
There is a sensible argument to be had about immigration and population (see article), and whether this wave of low-paid workers has put pressure on wages.
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