A nice idea especially since it the plan is to pay for it through private fundraising. From the Washington Post:

Several members of Congress are calling for a presidential commission to study the formation of a National Museum of the American People in Washington to tell the history of immigration and migration that formed the nation.

Virginia Rep. Jim Moran, a Democrat, and Tennessee Rep. John Duncan, a Republican, are expected to introduce legislation Thursday that calls for studying the feasibility of creating such a museum without any federal taxpayer funds.

Moran has been a chief critic of building individual ethnic museums on the National Mall. Another presidential commission recently called for a Latino museum to be added to the Smithsonian Institution.

A group that wants to build a Museum of the American People says more than 130 minority groups support the idea.