Other priorities, such as repealing and replacing the Affordable Care Act or building a wall on the U.S.-Mexico border, will require the approval of Congress, which will be controlled by Republicans but could still squabble over details.
One change in the border regime will require the import of excise goods — those subject to special taxes such as oil, alcohol and tobacco — to be redirected to the border crossing at Merdare on Serbia's border with southern Kosovo.
Climate change, for instance, does not respect international borders; addressing it will require international partnerships.
But any attempt to pass immigration and border security legislation will require Democratic support in the divided Senate.
Mr Clarke, who was first up, welcomed the fact that the open border with Ireland will require regulatory alignment.
Ryan Lizza reports that, because the proposed TransCanada Keystone XL pipeline crosses an international border, the project will require approval by the State Department and by the President ("The President and the Pipeline," September 16th).
Prevention of risky injections among border crossing IDUs will require very good supplies of sterile injection equipment on both sides.
While we must take measures to prevent TB among African-born children within our borders, long-term prevention will require our assistance internationally as well.
But the goal of the border wall fund, $50 million, will require considerably more largess.
As the president said while addressing the Oregon shooting with visible frustration bordering on helplessness, action "will require a change of politics on this issue".
