Trump's new travel ban, by the numbers

Negar Jourabchian looks at her mother Niloufar's passport, after she traveled from Iran to Logan International Airport in Boston earlier this year. On Sunday, President Donald Trump announce new travel restrictions. File photo by REUTERS/Brian Snyder

On Sunday, President Donald Trump issued a new travel ban, the latest in a series of moves aimed at stopping travel from certain countries to the United States. Here's a breakdown of the new ban.

Number of travel bans the president has issued so far, including Sunday's: 3.

Number of countries included in travel ban 3.0: 8: Chad, Iran, Libya, North Korea, Somalia, Syria, Venezuela, and Yemen, though the restrictions themselves differ by country.

When does the ban go into effect? Oct. 18.

How long will it last? The bans are indefinite, but can be lifted according to the president's proclamation when the listed countries "satisfactorily address the identified inadequacies" in their vetting procedures for travelers. By contrast, the previous travel ban, which expired Sept. 24, was only a 90-day suspension.

Number of majority-Muslim countries on the list: 6. According to the CIA World Factbook, the populations of Iran, Yemen and Libya are all at least 96 percent Muslim, while Syria's is 87 percent. Chad's population is 52.1 percent Muslim. Data for Somalia is unknown.

How many terrorists have come from these countries? According to one researcher at the right-leaning CATO Institute, between 1975 and 2015, there have only been nine people from these eight countries to have either carried out an attack in the United States or have been convicted of planning one. Another figure from that same research: There have been zero fatal acts of terrorism conducted by an individual from any of these countries.

Number of refugees affected by ban 3.0: The latest ban doesn't include any new rules on refugees — yet. The federal government says it will announce revised limits on travelers who enter the U.S. in the coming days. In the meantime, refugee restrictions from travel ban 2.0 are set to expire by Oct. 24 – likely the very latest Trump will come up with a replacement for the refugee ban.

Trump tweets this week on the travel ban: 1

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