Boris Johnson has backed David Cameron's crackdown on social housing, but said all measures towards curbing immigration "need to strike a balance".
"It is right for the Prime Minister to sort out (strains on housing from immigration)," the Mayor of London told the BBC's Andrew Marr Show, "If it's going to make the difference to stop people coming in who are going to leech off the system."
But he said any crackdown should come "without damaging our openness to talent" that he said was a "huge benefit" to London and the UK.
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