; Requiring Information-Sharing Regarding Attempted Explosives Purchases by Known or Suspected Terrorists; Authorizing the Investigation of Known or Suspected Terrorists Who Attempt To Purchase Explosives (a) Short Title This section may be cited as the Preventing Terrorists From Obtaining Explosives Act of 2017 . (b) Amendment Section 843 of title 18, United States Code, is amended by adding at the end the following: (j) (1) If the Attorney General receives an application for a user permit, limited permit, or license to import, manufacture, or deal in explosive materials from a person who is being investigated, or has been investigated during the preceding 5 years, as a known or suspected terrorist, or receives information under subsection (h) about a responsible person or employee who is being investigated, or has been investigated during the preceding 5 years, as a known or suspected terrorist, the Attorney General shall— (A) as appropriate, take further steps to confirm the identity of the applicant, responsible person, or employee and confirm or rule out the suspected nexus to terrorism of the applicant, responsible person, or employee; (B) as appropriate, notify relevant Federal, State, or local law enforcement agencies or intelligence agencies concerning the identity of the applicant, responsible person, or employee; and (C) determine whether the applicant, responsible person, or employee is the subject of an ongoing terrorism investigation and, as appropriate, initiate such an investigation. (2) Upon receipt of an application or information described in paragraph (1), the Attorney General or the United States attorney for the district in which the applicant, responsible person, or employee is located may— (A) for a period not to exceed 90 days, delay the approval of the application or the determination to issue a letter of clearance under subsection (h), as the case may be