David Cameron told BBC1's The Andrew Marr Show that the Government's changes to child benefit do not punish traditional families but make the system fairer.
Taking away child benefit from those earning over £60,000, that is only the top 15% of the country.
I'm not saying those people are rich but that this will raise £2 billion a year.
If we don't raise that money from these people, the top 15% in the country then we would have to find it from somewhere else.
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"You are one of the silence breakers and we all owe you a debt of gratitude."
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A cut in stamp duty to help first-time buyers is likely to push prices by at least the amount the reduction is supposed to save, MPs said.