Requires signage be placed alongside art and artifacts stolen during the transatlantic slave period and the domestic slave trade period indicating such material was stolen

Added the 'domestic slave trade period' as a covered time frame for the signage requirement.

Expanded the definition of affected items to include 'cultural materials, including artworks and artifacts' beyond just 'art', and added items 'composed in whole or in part of metal or other material exchanged for enslaved human captives'.

Updated the signage requirement to explicitly state that artifacts were 'made with materials exchanged for enslaved captives sold into the transatlantic slave trade or the domestic slave trade'.

Extended the specified peak period for art theft from 1850 to 1870 in the legislative text and title.

Added procedural text indicating the bill was re-referred to the committee for further action.