>>> DONALD TRUMP'S ALLIES ARE PUBLICLY AIRING THEIR FRUSTRATIONS OVER HIS DEBATE PERFORMANCE, HIS OVERALL MESSAGING AND WHERE OR MORE ACCURATELY, WHO THAT MESSAGING MAY BE COMING FROM. THE LATEST EXAMPLE, A RIGHT WING INFLUENCER AND CONSPIRACY THEORIST NAMED LAURA LOOMER WHO TRAVELED WITH TRUMP ON HIS PLANE TO TUESDAY EAT DEBATE AND MADE AN APPEARANCE IN THE SPIN ROOM. LOOMER WHO HAS CALLED 9/11 AN INSIDE JOB AACCOMPANIED THE FORMER PRESIDENT TO 9/11 COMMEMORATIONS YESTERDAY. IT TAKES A UNIQUE KIND OF VULGARITY TO BRING A 9/11 TRUTHER TO EVENTS MARKING THE ANNIVERSARY OF THE SEPTEMBER 11th ATTACKS. NBC'S VAUGHN HILLYARD IS FOLLOWING THE TRUMP CAMPAIGN ON THE GROUND IN ARIZONA. BRENDAN BUCK IS BACK WITH ME. YOU KNOW, BRENDAN, WE'VE BEEN SPEAKING LIKE THIS FOR A VERY LONG TIME. I OFTEN ASK THE QUESTION, WHEN REPUBLICANS HAVE EXPRESSED CONCERN, WHEN THEY'RE WORRIED ABOUT SOMETHING TRUMP SAYS, WHO WILL HE LISTEN TO? WHO CAN HAVE HIS EAR? WHO CAN TALK TO HIM? DO WE HAVE THE ANSWER? >> WE SURE DO, AND IT SEEMS TO BE GETTING CRAZIER AND CRAZIER. LOOK, I REMEMBER NEGOTIATIONS WHEN I WAS ON THE HILL WORKING FOR SPEAKER RYAN, AND WE'RE TRYING TO BREAKTHROUGH SOMETHING, AND THE PRESIDENT WANTED TO TALK TO THE SPEAKER AND THERE'S A FOX NEWS PERSONALITY, SURPRISINGLY, ON THE LINE WITH HIM. IT WAS JUST SORT OF HOW THINGS GO. NOW WE'RE INTO A WHOLE NEW LEVEL. WE HAVE TALKED A LOT ABOUT HOW POTENTIALLY THIS TRUMP CAMPAIGN IS MORE DISCIPLINED THAN THE PREVIOUS ITERATIONS, I THINK WE CAN THROW THAT OUT THE WINDOW. THIS PERSON HAS A VERY TENUOUS GRASP WITH REALITY, AND IT IS CLEARLY THE TYPE OF PERSON HE WANTS TO BE SURROUNDING HIMSELF WITH. AT THE SAME TIME, I DON'T WANT TO MAKE ANY EXCUSES FOR DONALD TRUMP. HE HAS AGENCY HERE. HE IS THE PERSON WHO IS SURROUNDING HIMSELF WITH THESE PEOPLE. AND IT JUST REFLECTS INCREDIBLY, NOT JUST POORLY, IT'S DISTURBING THAT YOU WOULD IDENTIFY AND ALLOW SOMEONE LIKE THIS NEAR YOUR CANDIDATE OR NEAR YOU, AND YOU WANT TO BE THE PRESIDENT OF THE UNITED STATES. IT'S OUTRAGEOUS, BUT, YOU KNOW, IT'S EASY TO JUST SORT OF ROLL YOUR EYES AT THIS AND GO, THIS IS ANOTHER DAY WITH DONALD TRUMP. IT IS ON ITS FACE, JUST ABSOLUTELY LUDICROUS. >> YOU WERE COVERING NEW YORK YESTERDAY. GIVE US A BACKGROUND ON LAURA LOOMER AND HOW SHE FITS INTO THE BIG PICTURE OF WHO DOES HAVE HIS EAR AND WHAT HE'S CHOOSING TO FOCUS ON? >> Reporter: IT WAS SOMETHING TO BE HOLD, THE FACT THAT LAURA LOOMER WAS AT THE 9/11 CEREMONIES IN NEW YORK BUT IN PENNSYLVANIA BECAUSE WE KNEW THAT SHE WAS ON THE PLANE WITH HIM TO PHILADELPHIA AT THE DEBATE, BUT AT THAT POINT IN TIME, LET'S BE VERY CLEAR, YOU COULD ARGUE THAT SHE'S AMERICA'S PREEMINENT CONSPIRACY THEORIST. I DID NOT KNOW SHE WAS A 9/11 TRUTHER. AS SOON AS I SAW HER AT THE EVENTS IN NEW YORK, I FOUND OUT, IN FACT, SHE'S SOMEBODY WHO LAST YEAR POSTED ABOUT 9/11 BEING AN INSIDE JOB. SHE'S ALSO VERY INCENDIARY, OUTSIDE OF THE CONSPIRACY THEORIES, SHE CALLED A MEMBER OF CONGRESS WHO SPOKE FROM THE STAGE, GHETTO, WHEN TIM WALZ WAS SPEAKING ABOUT HIS FAMILY'S FERTILITY ISSUES, SHE POSTED, YOUR DAUGHTER WAS A MISTAKE. NOBODY CARES ABOUT YOUR FERTILITY ISSUES. IT'S A MEANNESS AND INCENDIARY, DEROGATIVE, RACIST, XENOPHOBIC REMARKS THAT SHE HAS A PENCHANT TO MAKE ON ALMOST A DAILY BASIS THAT I THINK HAS RAISED CONCERNS AMONG TRUMP ALLIES OVER THE COURSE OF THE LAST YEAR, AND EVEN THE LIKES OF MARJORIE TAYLOR GREENE WHO HAS CALLED HER MENTALLY UNSTABLE, AND SOMEBODY THAT HURTS THE REPUTATION OF MAGA AND DONALD TRUMP. AS TO DONALD TRUMP'S DEBATE PERFORMANCE, CHRIS, I THINK WE HAVE A SOUND BITE FROM SOMEBODY THAT I TALKED TO JUST OUTSIDE OF THIS EVENT HERE IN TUCSON, WHERE HE'S SUPPOSED TO SPEAK SOON ABOUT HOW HE PERFORMED AND I'LL JUST LET YOU -- HER NAME IS CRIMSON, I'LL LET YOU HEAR HER OWN ANALYSIS. TAKE A LISTEN. >> WHAT DID YOU THINK ABOUT DONALD TRUMP'S PERFORMANCE? >> IT WASN'T MY FAVORITE OF HIS PERFORMANCES. I'M A HUGE DONALD TRUMP SUPPORTER. CLEARLY GOING TO VOTE FOR HIM. I THINK HE REFERRED BACK TO THE BORDER OF IT TOO MUCH, INSTEAD OF MOVING FORWARD WITH SOME OF THE QUESTIONS. WE CARE ABOUT THE BORDER, BUT I THINK THAT LOOKED BAD ON HIM, AND OF COURSE THE DOG EATING THE DOGS UP NORTH LOOKED BAD ON HIM. BUT OTHER THAN THAT, I THOUGHT HE DID OKAY. >> SO, CHRIS, THESE WERE A FEW CONVERSATIONS OF IT'S NOT JUST, YOU KNOW, REPUBLICAN OPERATIVES OR ALLIES WHO HAD CONCERNS OR THE LIKES OF ROBERT F. KENNEDY JR. ABOUT DONALD TRUMP'S ABILITY TO DEBATE AND WIN OVER VOTERS, BUT SOME OF HIS OWN SUPPORTERS WHO WISH HE HAD HAD A MORE FOCUSED MESSAGE, PARTICULARLY FOCUSED ON IDEAS OF THE ECONOMY AND THE HOUSING CRISIS, WHICH IS HOW THE CAMPAIGN BILLED THIS AFTERNOON'S EVENT. WE'LL SEE HOW DONALD TRUMP ON THE WESTERN CAMPAIGN SWING, ULTIMATELY, THE WORDS THAT COME OUT OF HIS MOUTH FROM STAGES LIKE THIS, HE'LL BE IN BATTLEGROUND NEVADA TOMORROW NIGHT, CHRIS. >> WE JUST TALKED ABOUT MARJORIE TAYLOR GREENE, SHE HAS OVERALL BEEN CRITICIZING TRUMP/VANCE MESSAGING. THIS IS HER TODAY. >> AND I THINK THAT WE NEED TO BE FOCUSED ON OUR POLICIES, THE INFLATION, THE ECONOMY, THE BORDER, AND NOT ATTACKING PEOPLE FOR THEIR RACE, NOT ATTACKING THEM BECAUSE THEY MAY NOT HAVE CHILDREN AND THEY LOVE THEIR PETS, AND I DON'T WANT TO HAVE ANYTHING TO DO WITH THAT. >> SO I WONDER IF YOU'VE LOST EVEN MARJORIE TAYLOR GREENE IS THAT A SIGN YOUR MESSAGING MAY BE OFF? >> I MEAN, YEAH. I THINK WHAT YOU HAVE HERE IS A TRUMP -- SOMEONE WHO'S A LITTLE JEALOUS THAT SHE WAS NOT ON THE PLANE. I HAVE A HARD TIME TAKING HER SERIOUSLY. I DON'T WANT TO GIVE HER CREDIT FOR BEING THE VOICE OF REASON IN THE REPUBLICAN PARTY, BECAUSE SHE'S NO STRANGER TO CONSPIRACY THEORIES HERSELF. PUT HER ASIDE, THE WOMAN OUTSIDE THE EVENT BEING CONCERNED ABOUT TRUMP TALKING ABOUT PEOPLE EATING DOGS, YOU WONDER HOW THAT GETS IN HIS HEAD WHEN HE'S LITERALLY FLYING TO THE DEBATE WITH A CONSPIRACY THEORIST. THINGS AREN'T GOING TO GET BETTER IF THIS IS THE PEOPLE WHO ARE SURROUNDING HIM. BUT THE FACT THAT THIS IS A