0:00:10 > 0:00:13Hi, I'm Martin and this is Newsround.
0:00:13 > 0:00:17First, America is waking up today to a new president, Donald Trump.
0:00:17 > 0:00:21The billionaire businessman and former reality TV star has taken
0:00:21 > 0:00:24charge of the US after a huge inauguration ceremony yesterday.
0:00:24 > 0:00:29Leah was there in the capitol Washington.
0:00:30 > 0:00:33This is the moment Donald Trump officially became the 45th president
0:00:33 > 0:00:37of the United States.
0:00:37 > 0:00:40I, Donald John Trump, do solemnly swear that
0:00:40 > 0:00:46I will faithfully execute the office of President of the United States.
0:00:46 > 0:00:49In his speech afterwards he told the crowds that he
0:00:49 > 0:00:52would put America first.
0:00:52 > 0:00:56I will fight for you with every breath in my body and I will never,
0:00:56 > 0:01:03ever let you down.
0:01:03 > 0:01:07The ceremony was also timed to say goodbye to outgoing
0:01:07 > 0:01:13President Barack Obama who flew out in a helicopter.
0:01:13 > 0:01:17Thousands of people came to watch Trump's inauguration.
0:01:17 > 0:01:20Since he's going to be running our country, I want to help
0:01:20 > 0:01:21support him and just come see him.
0:01:21 > 0:01:24It was pretty exciting because this is the moment
0:01:24 > 0:01:27only certain people see.
0:01:27 > 0:01:31He can't really do anything too terrible so I'm interested
0:01:31 > 0:01:33to see what he does.
0:01:33 > 0:01:36It's an historical moment so I'm happy to be here.
0:01:36 > 0:01:39We have a new president now.
0:01:39 > 0:01:41Not everyone here is celebrating.
0:01:41 > 0:01:46These people are protesting outside his new hotel in Washington, DC.
0:01:46 > 0:01:48They are unhappy and they don't think he's the right
0:01:48 > 0:01:50man to run the country.
0:01:50 > 0:01:54There are more protests expected here, too.
0:01:54 > 0:01:57I really have no idea how he will run this country.
0:01:57 > 0:02:02So far it doesn't seem like he's been doing the best kind of job.
0:02:02 > 0:02:05I hope that he doesn't, like, pick fights with other
0:02:05 > 0:02:09countries and start a war.
0:02:09 > 0:02:16Try not to mess America up that much in four years.
0:02:16 > 0:02:20Then it was time for the big parade.
0:02:20 > 0:02:25And now, for the first time, the new president of America,
0:02:25 > 0:02:28Mr Donald Trump, is here along the parade route greeting people
0:02:28 > 0:02:34for the very first time.
0:02:34 > 0:02:37He's our new President, I can't do anything about it so...
0:02:37 > 0:02:40I feel like he's a great businessman and will do a great
0:02:40 > 0:02:41job as our president.
0:02:41 > 0:02:42I feel the same way.
0:02:42 > 0:02:48I think he's going to do a lot of things great.
0:02:48 > 0:02:51So, as Donald Trump wakes up to his first morning in the White House,
0:02:51 > 0:02:58the country is waiting to see if he can live up to his promises.
0:02:58 > 0:02:59That's all from me.
0:02:59 > 0:03:02Newsround's back just before 12.
0:03:02 > 0:03:06Bye.