The Prime Minister and Jack Straw, the Home Secretary, are privately drawing up plans to reverse the UK's opt-out of immigration law which is enshrined in the Amsterdam Treaty.
The controversial proposal would mean Britain abiding by asylum legislation agreed in Brussels, including an EU-wide definition of a refugee, the treatment of asylum seekers and the "white list" of countries where no serious risk of persecution is considered to exist.
The Government fears that if Britain is not involved in the European- wide legislation, it will end up as a favoured port for asylum seekers who may find it increasingly difficult to break through the ring of steel around the rest of Europe.
Britain is now the second most popular country in Europe - behind Germany - with asylum seekers. More than 100 Romanian illegal immigrants were found in Kent on Friday.
Ministers believe that they could present the policy to right-wingers as an attempt to get tough on illegal immigrants by improving the scrutiny of applications. There is no suggestion that the UK would agree to common border controls.Reuse content