Is it true that non-US citizens are restricted from gaining access to classified information?

Non-U.S. citizens can indeed gain access to classified information under certain circumstances, particularly if they have a legitimate need to know and if specific legal and security measures are satisfied. Generally, non-U.S. citizens require a security clearance, and their access is carefully considered in relation to national security interests.

The assertion that non-U.S. citizens are outright restricted does not take into account various scenarios where they may be granted access, especially in contexts such as international cooperation in defense or intelligence-sharing agreements. Security clearances for non-citizens are not as common and are approached with stringent scrutiny, but categorically stating that they are entirely restricted would be misleading.

It's important to note that classified information's access is determined on a case-by-case basis, considering specific roles, responsibilities, and relations with U.S. entities. Understanding these nuances is essential for comprehending security policies and practices regarding classified information.