OP, your insinuation is that PRISM weakened US networks, but that is a misunderstanding of what the program actually did. Wikipedia:
>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 US 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.[38] DITU then sends these communications to NSA, where they are stored in various databases, depending on their type.
I personally think it's important to understand what types of surveillance our government is doing and not listen to FUD on what people think they are doing. In this case, there's no weakening of a network. The FBI provides a selector (email) to the service provider, and the provider uses their own systems to retrieve the data and send it back. The "direct line" that many people reference is to the database of selectors, so that FBI can push it directly to the provider.
If you know more, the best thing is to share some of what you know, so the rest of us can learn. A lot of people read these threads who are curious and open to good information.