About: http://webisa.webdatacommons.org/180931133

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	This clause prohibited Congress from banning the Migration or Importation of such Persons as any of the States now existing shall think proper to admit before the year 1808.
http://www.w3.org/ns/prov#wasQuotedFrom	archives.gov