President Donald Trump wants a national missile defense system like Israel's, but Sen. Mark Kelly, D-Ariz., raised doubts that it is viable.

Senator Mark Kelly reacts to news that Defense Secretary Pete Hegseth is ending a Pentagon program President Trump signed into law in his first term.

Sen. Mark Kelly prodded Secretary of Defense Pete Hegseth for more details on the "Golden Dome" missile defense system proposed by the Trump administration. Kelly questioned if some of Hegseth's ...

Democratic Sen. Mark Kelly of Arizona says President Trump's decision to strike Iran leaves the U.S. in a "dangerous" moment ...

Kelly, who hasn’t decided whether he will support Pete Hegseth in a full conf Sen. Mark Kelly (D., Ariz.) stopped and spoke with reporters while making his way to this morning’s hearing room.

During his remarks in a Senate hearing today, Senator Mark Kelly got into a tense exchange with Pete Hegseth over President Trump's plan to build a "Golden Dome" missile defense system.

Defense Secretary Pete Hegseth commented on why the U.S. doesn't have complete confidence thjat the Iranian nuclear site at Fordow is completely destroyed: KELLY O'DONNELL, NBC NEWS: Mr. President, ...

U.S. Sen. Mark Kelly cast doubt on “the physics” of a proposed nationwide missile defense system and urged Defense Secretary Pete Hegseth to seek a viability analysis from scientists, not ...