Which of the following statements regarding the Foreign Intelligence Surveillance Act $($FISA$)$ is true?

Group of answer choices

FISA was enacted in $1978,$ but its provisions were greatly strengthened in the aftermath of the $9/11$ terrorist attacks.

Under the FISA, the government does not need to notify defendants if the evidence being used against them in court was gathered in FISA surveillance.

To spy on people located in the United States who are communicating abroad, the government needs a warrant.

To spy on people located in the United States who are communicating abroad, the government must obtain permission from a secret Foreign Intelligence Surveillance Court.