Drain the swamp

So, imagine there's a big, messy swamp with lots of scary and dangerous creatures living in it. Sometimes, people who are in charge of taking care of the swamp get lazy or greedy and start doing things that aren't good for the swamp or the creatures living in it.

When people say "drain the swamp," they mean that they want to get rid of all those bad things and people who are causing harm in the swamp. They want to make sure that the swamp is taken care of and that the creatures who live in it are safe and happy.

It's kind of like cleaning up your own room. Sometimes, it gets really messy and you need to throw away things that are broken or don't belong there. You want to make sure your room is nice and clean, so you can sleep well and be happy in it. That's what "draining the swamp" is all about - making sure everything is cleaned up and taken care of so that everyone can be happy and safe.