Ed Balls believes a tough message is essential but Chuka Umunna and Sadiq Khan are warier.
The Conservatives' failure to meet their pledge to reduce net migration to "tens of thousands" is one of the best things to have happened to the economy.
Most Conservative supporters want more immigration, not less, according to the centre-right think tank, Bright Blue.
This year, all the main parties have been competing over who can curb benefits for migrants the most. Why is this their approach?
The truth is, there is no substantial definition of "British values" and "integration", which are landmark terms for restrictive measures and border control.
After decades of simmering instability, the once lauded ideal of British multiculturalism is now seen as a failure.
Ed Miliband is constantly talking about immigration; he just isn't making a strong enough case.
"Moving the conversation on".
Labour leader promises a new law banning employers from undercutting workers' wages and conditions by exploiting migrants.
The guardians of Fortress Europe are fighting a lost battle: poor migrants will always try to find a better life for themselves, or die in the attempt. Daniel Trilling traces their steps, from the Middle East and Africa to the Kent countryside.