What document indicates a pending or approved asylum application?

The document that indicates a pending or approved asylum application is the application for asylum in the United States. This application serves as official evidence that an individual has requested asylum and allows the authorities to process their request. It includes vital information regarding the applicant's circumstances and the reasons for seeking asylum, thereby establishing the foundation for their case. This application is crucial as it signifies that they are seeking protection due to fears of persecution in their home country.

The other options, while related to immigration, do not specifically indicate the status of an asylum application. For instance, a refugee admission letter is typically issued after an application has been approved, but it does not indicate the status of an asylum application which pertains specifically to individuals already in the U.S. Additionally, an immigration certificate is a broader document that does not directly relate to the asylum process. An employment authorization document, while important for allowing work authorization, does not indicate the status of an asylum application either; it may be issued after an asylum application is pending but does not serve as confirmation of the application itself.