I think that if they do this, they should require all states and localities to commit to updating an online clearing house of tax rates for their locality based on location and product type. If you fail to do so, merchants are under no obligation to collect your tax. The reason why this loophole has existed so long is that it is very difficult to tax according to 1000s of laws nationwide.

I do not think people should be really against this. If you are against paying sales tax, lobby your local government to stop sales tax.