A convention official confirmed the return of the cards, which the company donated last month.
“I commend the DNCC for doing the right thing,” Joe Hansen, international president of the United Food and Commercial Workers International Union said in a statement Monday.
“The allegations of bribery and corruption against Walmart are serious and there is no way to know whether these contributions are tainted … Walmart has a long track record of mistreating their workers.”
Last month the New York Times detailed allegations that the company bribed officials in Mexico to increase its business there.
The DNCC decision followed reports that some unions plan to withhold financial support from the convention, in part because North Carolina, a right-to-work state, is the least-unionized state in the nation. Organized labor is one of the party’s core constituencies.
Last week the Wall Street Journal reported that unions’ reluctance to support the convention comes as organizers struggle to raise nearly $37 million for the convention.
Read more at the Miami Herald.