Any senator can block the nominations on the Senate floor — they can only be confirmed with unanimous support.
Sen. Ted CruzTed CruzGraham, Cruz proposal to defund the U.N. is misguided Right renews push for term limits as Trump takes power Dissenting nominees give hope to GOP skeptics of Trump MORE (R-Texas) has indicated he might block Wheeler's nomination unless he promised not to require more disclosure about the groups paying for political advertisements. Cruz's office did not respond to a request to comment Wednesday evening.
Wheeler is an investor and former lobbyist for the cellphone and cable industries. O'Rielly is a longtime congressional aide who currently works for Sen. John CornynJohn CornynSenate panel sets vote on Sessions for AG Obama commutes Chelsea Manning's sentence Report: Concealed-carry permit holders have killed hundreds since 2007 MORE (R-Texas), and McSweeny is currently an attorney in the Justice Department's Antitrust Division.
—Updated at 6:51 p.m.