Excellent US cartoon

I'll let you read the text in the lower left-hand corner (if you can) to discover whom we should thank for this delightful political cartoon.

Click to enlarge slightly

Johnson looks as if he has just crawled out of a hole in a log. Clinton is trying desperately to suppress an approaching fart. Meanwhile, Trump is a happy as a contented toad. Does America really need to make one of these individuals their future president?