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DES MOINES, Iowa (AP) — A Republican congressman is trying to block the Treasury from redesigning U.S. currency, a move that could prevent the government from replacing Andrew Jackson on the front of the $20 bill with abolitionist Harriet Tubman. Rep. Steve King of Iowa has offered an amendment to a spending bill barring the use of funds to redesign any Federal Reserve note or coin. Treasury Secretary Jacob Lew announced the changes in April. Tubman would become the first African-American on U.S. paper currency and the first woman on paper currency in a century. Alexander Hamilton's portrait will remain on the front of the $10 bill. The back is to be redesigned to feature Susan B. Anthony. It wasn't immediately clear why King opposed the redesign. His office did not immediately respond to messages.

GOP congressman seeks to block changes to US currency