Washington ? The chairman of the House Oversight Committee is asking for further delay on any approvals for the Dwight D. Eisenhower Memorial being planned for the a site near the National Mall.

This model image, provided by Eisenhower Memorial Commission, shows the proposed Dwight D. Eisenhower Memorial to be built in Washington. Designers from architect Frank Gehry's firm unveiled some changes to a planned memorial honoring Eisenhower after hearing complaints from members of Eisenhower's family.

California Rep. Darrell Issa sent a letter Thursday to the Eisenhower Memorial Commission saying more questions must be answered about the design process for the memorial before it’s approved.

Issa says he hasn’t received any answers from the General Services Administration about how architect Frank Gehry was chosen to design the memorial.

Issa is also a member of the National Capital Planning Commission, a panel that must approve the design before construction can begin. He says he won’t support the design until there is a thorough examination.

Eisenhower’s family also objects to some elements of the design.