The Department of Immigration and Border Protection (DIBP) was an Australian government agency responsible for managing immigration and border control. Its main functions included processing visa applications, enforcing immigration laws, and ensuring the security of Australia's borders. The DIBP aimed to facilitate the entry of legitimate travelers while preventing illegal immigration and smuggling. In 2017, the DIBP was merged into the Department of Home Affairs, which expanded its responsibilities to include national security, emergency management, and multicultural affairs. This integration aimed to create a more coordinated approach to managing Australia's immigration and border protection policies.