Hodar - you need to read more about this incident. He didn’t make a clock.
He took an existing clock and put it in a pencil box, not a suitcase. Then, after being told by his science teacher to put it away and not show it to anyone, he got up from his desk in the middle of English class to plug it into the wall to get it to make noise and show it to his English teacher.
I have no doubt that 0Bama just wanted to say to the kid (in person), “You didn’t build that.”