> The actual collection process is done by the Data Intercept Technology Unit (DITU) of the FBI, which on behalf of the NSA sends the selectors to the U.S. internet service providers, which were previously served with a Section 702 Directive. Under this directive, the provider is legally obliged to hand over (to DITU) all communications to or from the selectors provided by the government.

Being legally compelled to provide data isn't the same as being 'willing'.