Context: Internet service providers in many countries are legally required (e.g., via Communications Assistance for Law Enforcement Act (CALEA) in the U.S.) to allow law enforcement agencies to monitor some or all of the information transmitted by the ISP. Furthermore, in some countries ISPs are subject to monitoring by intelligence agencies. In the U.S., a controversial National Security Agency program known as PRISM provides for broad monitoring of Internet users traffic and has raised concerns about potential violation of the privacy protections in the Fourth Amendment to the United States Constitution. Modern ISPs integrate a wide array of surveillance and packet sniffing equipment into their networks, which then feeds the data to law-enforcement/intelligence networks (such as DCSNet in the United States, or SORM in Russia) allowing monitoring of Internet traffic in real time.

Question: What are ISPs subject to monitoring by in some countries? 
Answer: intelligence agencies

Question: What is the controversial N.S.A. program used in the U.S.?
Answer: PRISM

Question: What does PRISM do? 
Answer: provides for broad monitoring of Internet users traffic

Question: What do ISPs integrate into their network to provide information to intelligence agencies? 
Answer: a wide array of surveillance and packet sniffing equipment

Question: What do DCSnet in the US and SORM in Russia do? 
Answer: allowing monitoring of Internet traffic in real time

Question: What are ISPs not legally required to do?
Answer: Unanswerable

Question: What this PRISM stopped the national security agency for doing?
Answer: Unanswerable

Question: Who objects to PRISM
Answer: Unanswerable

Question: What do ISPs remove from their networks to discourage intelligence agencies?
Answer: Unanswerable

Question: What do many people say violates the First Amendment?
Answer: Unanswerable