Immigrants face tougher curbs on unemployment benefits and access to the health service, under a crackdown unveiled by David Cameron.
The Prime Minister will use a keynote speech today to warn those coming to Britain that they can no longer expect "something for nothing".
From next year, arrivals from the European Union will be stripped of jobseekers benefits after six months unless they can prove they have been actively looking for a job and stand a "genuine chance" of finding one.
The Government is pledging to beef up the "range and depth" of questions in the habitual residence test, which checks that people meet residence requirements for housing and income-related benefits.
Mr Cameron will also target illegal immigration – doubling the maximum fine for companies that employ illegal workers to £20,000 – and signal action against so-called "health tourism" that could mean non-EU nationals have to prove they hold insurance before getting care.
The harder line will please the Tory Right, who have blamed the lack of action in such core areas for the party's dismal third place behind the UK Independence Party (Ukip) in the Eastleigh by-election.
In his spring conference address over the weekend, Ukip leader Nigel Farage claimed his willingness to talk about immigration was one of the main reasons for the party's surge in popularity. Concerns have also been rising over an influx from Bulgaria and Romania when movement restrictions are loosened at the end of this year.
But the Bishop of Dudley, David Walker, told the Observer: "Public fears around immigration are like fears around crime. They bear little relationship to the actual reality.
"The tone of the current debate suggests that it is better for ten people with a legitimate reason for coming to this country to be refused entry than for one person to get in who has no good cause."
Speaking at an event in East Anglia, Mr Cameron is due to say: "While I have always believed in the benefits of immigration I have also always believed that immigration has to be properly controlled."
