Politico.  North Dakota Public Service Commissioner Tony Clark (NGP Photo-r) is being nominated for an opening on FERC.  Sen. John Hoeven tells The Associated Press that President Barack Obama will nominate Clark later Monday.  Clark would have to be confirmed by the Senate to take the job. FERC has five members; the commission now has one opening that's reserved for a Republican.  The agency regulates interstate oil and gas pipelines, electric transmission lines and sales of natural gas and wholesale electric power.  Clark's term on the North Dakota commission ends [...]