Americans living under surveillance

1.preface
After the September 11 attacks, the Immigration and Customs Enforcement (ICE) was given great power to fight terrorism and enforce immigration laws. Since then, ICE has often crossed legal and moral boundaries to collect personal information about citizens to build a vast surveillance system that has collected privacy data from hundreds of hundreds of millions of Americans and is largely unsupervised.
In the past year alone, the FBI has conducted up to 3.4 million search checks on the electronic data of U. S. citizens without search warrants, according to the annual report of the Director's Office of National Intelligence.