U.S. President Donald Trump may have left the White House declaring victory on North Korea, but some humanitarian workers remember his administration as a web of red tape that stifled their ability to help average people living in an impoverished state.

Now, those humanitarian workers are calling on U.S. President Joe Biden to undo several Trump-era policies, including a ban on American travelers to the DPRK and a licensing system that authorizes their projects.

“The new Biden administration appears to be much more principled,” said Kee Park, director of the Korea Health Policy Project and lecturer at Harvard Medical School.