Decreasing the pull factors, they say, will reduce the number of migrants making for the Mediterranean's European coast – even though research has largely disproved this argument.
Mr Kerry also won in Michigan, Washington state and Maine a couple of days before, so he has now racked up victories in every part in the country, disproving the argument of his most plausible rival, John Edwards, that he cannot win in the South.
Disproving this is difficult.
However, quantitative research proving or disproving this relationship is sparse.
I'm actually not sure if this definitively disproves the argument for blaming the porn industry, since it's plausible that the 12th could be in the same pay period as the shutdown, depending on how regularly industry paychecks go out, and since employees may not come into the office or studio every day.
"The numbers disprove the argument that deforestation is necessary for the country's economy to grow," he said.
Proponents of reform argue that Sweden, which has one of the lowest population densities in the EU, disproves the argument that rural countries cannot both have open markets and provide a standard service for everyone.But France, Spain, Italy and other countries worry that abolishing the "reserved area" will damage this universal-service obligation.
And that confidence may be further shaken if independent full manual recounts by the press (allowed under Florida's sunshine laws) decide that Mr Gore did indeed "win".For all these reasons, it will be impossible to disprove the argument that the whole thing was a stitch-up.
Chapter three considers whether the internet and other computing technologies disprove the argument.
He thought he ended the cold war -- and maybe in another fifty years we will have access to the documentation to prove or disprove the argument.
He also suggested that legalization would lead to more people using hard drugs, even though studies have repeatedly disproven the argument that weed is a so-called "gateway drug".
