More than 1,800 people who were supposed to be deported as national security threats were given citizenship instead … by accident.

More than 1,800 people who were supposed to be deported as national security threats were given citizenship instead … by accident. - AEI | Foreign and Defense Policy Blog » AEIdeas
"Yesterday was not a good day for building confidence in the ability of the US government to screen for terrorists.
...the Washington Post reported that a Department of Homeland Security inspector general’s report found that the US government not only missed more than 800 other potential terrorists, it mistakenly gave them US citizenship:
…at least 858 immigrants from countries that pose national security threats or their neighbors who have mistakenly been granted citizenship. They were naturalized despite being ordered to be removed from the country, because the government couldn’t match their identities to their removal orders.
These immigrants were supposed to be deported because they posed a threat to national security, but instead they were given the right to vote.
Wait, it gets worse.
CNN then reported that the number of individuals mistakenly granted citizenship is more than twice as large as initially reported:
[T]he truth is the report is even worse than reported, with more than 1,800 individuals naturalized who should have been deported from the country…. The Inspector General determined that the agency granted citizenship to 858 individuals who had been ordered deported or removed under another identity but “their digital fingerprint records were not available” during the naturalization process..."