California residents are supposed to pay use tax on internet purchases regardless of the physical presence of the retailer, right?
Running the math: the $200 million/year loss that they claim is an estimate on tax fraud on just Amazon purchases? At a 7.25% tax rate, that's a tax on $2.7 billion in sales, and Amazon's US sales last year were 18.7 billion [1]. They're estimating that unreported purchases in California comprise 14% of Amazon's revenue in the US.
California comprises about 12% of the US population. The assumption is invalid, because 14% is greater than 12% - but, assuming it's reasonably close, we can still say that either (1) the politicians are ignoring the use tax or (2) there is a massive amount of fraud going on in use tax reporting.
[1] http://www.internetretailer.com/2011/01/27/amazon-sales-and-...