Taliban Checkpoints 

The Taliban have seized control of all major roads in Kabul and this means that they control the flow of people, including military and American civilian traffic. Even if the Biden administration were to kick it into gear and join our European allies in rescuing civilians it would be extremely difficult. 

There are reports coming from the country that Taliban are refusing to let Americans pass through the checkpoints despite the promise they gave the Biden administration that they would. Some American civilians are allegedly being assaulted at these checkpoints by Taliban thugs.