While DHS, ICE, and US Border Patrol Agents are legally allowed to interrogate passengers within 100 air miles of the Borders of the United States, allegations of human rights violations and racial profiling that have been filed against the agents who have boarded the Greyhound buses and interrogated passengers at bus stations or along routes outside United States border zones.According to the ACLU and some legal experts, without a warrant, United States Border Patrol agents need the explicit consent of Greyhound to be on Greyhound property.Protesters against Greyhound Bus Lines allowing the DHS and ICE agents to board the buses have posted an online petition titled "GREYHOUND: STOP THROWING PASSENGERS UNDER THE BUS" on the ACLU website which has already gathered 111,895 signatures worldwide.