I'm just sick of this charade by the left always claiming "it's for the children!!!" Everything is for the children. Addressing climate change (as if man had any ability to control it) is for the children. Banning natural gas stoves is for the children. Mooochele making school cafeteria menus with food kids wouldn't dream of putting in their mouths is for the children. Disarming law abiding citizens is for the children. And now keeping child labor laws we have is for the children.
The truth of the matter is Democrats could give a shit less about the children unless they can use them for political props.
Now as to the OP, it's very vague at best. I would like to see the documentation that these 10 year olds were actual employees of the McDonald's. Kids being with their parents who are trying to keep then busy is not what I would consider a McDonald's employee. And it sounds like the franchise owners knew nothing about it.
But back to child labor laws: When I was a kid I joined the work/study program. I was about 12 at the time. They gave me a job at another city school. My routine job was to clean the pits. The pits were window wells in the ground about 5 feet deep. They were protected by rails so nobody accidentally fell in there. I would have to jump those rails, lower myself into the pits, and clean them out so if it rained, the sewer wasn't plugged and water going into the classrooms.
There were times I couldn't get out of the pits, especially if it was drizzling or snowing and I couldn't get a strong enough grip on the rail to pull myself out of them. It's not like they gave me a ladder or anything. But after a lot of struggle, I made it out.
from there I would collect the waste baskets out of the classrooms, take what I collected to the basement chute, and dump the trash down the chute. When I was finished, I had to go into the basement to the furnace, start a fire, and burn the garbage. I didn't mind that job because I was down there all alone next to the boilers and was able to catch a cigarette or two while in front of the flames.
Back in those days nobody had problems with children working. It was the best thing for us. I remember how proud I was to get my first check in my name on it by the school.