JCPA requires news publications to have ISSN

The U.S. ISSN Center, part of the international ISSN Network, assigns International Standard Serial Numbers (ISSN) to serials published in the United States.
The ISSN is a standard identifier for serials such as journals, magazines, newsletters, newspapers, and annuals whether published in print, online or other media. Each medium version is assigned a separate ISSN. The assignment of the ISSN is free to U.S. publications. There is no charge associated with its use.
The U.S. ISSN Center website, www.loc.gov/issn, includes a link to the application system, ISSN Uplink, along with information about ISSN policies, FAQs and specialized information such as ISSN use in bar codes and ISSN use by the U.S. Postal Service. Also included are links to the website of the ISSN International Centre and to other relevant websites.
In order to apply for an ISSN, applicants must first create an account in ISSN Uplink, the U.S. ISSN Center’s online application system, and enter the required information for each title requested. Applicants are prompted to provide URLs for online publications and attach scans for print or other physical formats such as DVD or CD-ROM.
Applicants for titles available in print are also required to send hard copies by U.S. Mail or private carrier to the U.S. ISSN Center. The mailing label to use for submitting the hard copies can be downloaded from the site.
To fulfill its purpose, the ISSN should be displayed prominently on every issue, preferably in the top right corner of the cover of print publications or on title screens or cover screens of online publications. It is acceptable, however, for the number to appear elsewhere on the publication (usually in the masthead area). Various user groups—particularly the U.S. Postal Service—have specific printing regulations which must be adhered to.
For more information, visit the U.S. ISSN Center website, www.loc.gov/issn.