The Biden administration sued Arizona Gov. Doug Ducey (R) on Wednesday over his construction of a barrier made of double-stacked shipping containers along parts of the U.S.-Mexico border.
Why it matters: Ducey launched the effort to fill in gaps in the Trump administration's border wall amid a sustained surge in border crossings and has continued the project as a final act before he leaves office in January. Federal authorities have said, however, that the barrier is unlawful since it is erected on U.S. land.
