Eritrean Nationals' Safety from Unjust Removal or Expulsion Act or the ENSURE Act of 2020 This bill defers the removal of qualified Eritrean nationals for 24 months starting from this bill's enactment. To qualify, a Eritrean national must have been (1) ordered removed to Eritrea before this bill's enactment, and (2) continuously present in the United States since this bill's enactment. The Department of Homeland Security may not detain a qualified individual for immigration status reasons or because the individual moved to reopen certain immigration proceedings. Generally, a qualified individual shall have work authorization unless the individual is subject to extradition. An extradition based on a not-credible accusation that the individual committed crimes against humanity shall not disqualify the individual from receiving work authorization.