The consent of the state is given, in accordance with clause 17, Section 8, Article I, United States Constitution, to the acquisition, after May 6, 1902, by the United States, by purchase, condemnation, lease, or otherwises, of any land in this state required for sites for custom houses, courthouses, correctional institutions, post-offices, arsenals, or other public buildings whatever, or for any other purposes of the government.