The international police organization Interpol sent a team to Kenya last week to help authorities investigate a terrorist attack at the Westgate Mall. More than 60 people were killed in the assault on the upscale shopping center by al-Shabaab militants.
U.S. Rep. Ed Royce, R-Calif., chairman of the House Foreign Affairs Committee, said al-Shabaab deserves a closer look.
"Following the recent brutal attack on Nairobi's Westgate shopping mall, it is critical that the United States and our allies reassess the threat that al-Shabaab poses outside of Somalia and outside the region," Royce said in a statement Tuesday.
A 2011 report from the House Committee on Homeland Security concluded there was a "looming danger" of U.S. nationals who have pledged loyalty to al-Shabaab returning to the United States to strike or help al-Qaida and its affiliates attack the United States.
In May, four men were sentenced in a U.S. court in Minnesota to prison for terrorism offenses related to support for al-Shabaab, which is typically associated with attacks on Somalia.
Royce scheduled a hearing Thursday on al-Shabaab.
Notable deaths of 2014 [PHOTOS]