What was the purpose of the 2006 amendments to the USA Patriot Act?

Question

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The 2006 amendments to the USA Patriot Act were aimed at achieving greater judicial oversight. The amendments required the government to prove that the targets of surveillance were agents of a foreign power or a terrorist group, and that their activities posed a significant risk of harming national security. The amendments also included new reporting requirements for the Justice Department to provide information to Congress about the use of surveillance powers.

What Was the Purpose of the 2006 Amendments to the USA