She wrote: "Barack Obama and Michelle Obama are ugly!"
However, the couple are not the only high profile victims of 27-year-old Amanda's wrath, last month, in a post on the micro-blogging site, which has since been deleted, Amanda also called Zac Efron ugly.
She wrote: "@ZacEfron has an ugly face (sic)."
Other celebrities to face Amanda's ire include Rihanna as she claimed Chris Brown assaulted his then girlfriend in 2009 because she wasn't pretty enough.
Amanda tweeted: "Chris Brown beat you because you're not pretty enough," before adding: "@Rihanna no one wants to be your lover so you call everyone and their mother that I almost named my new dog Rihanna (sic)."
She also lashed out at Rihanna's ex Drake, calling him "ugly", despite previously opening up about her crush on him.
Amanda said: "Drake has the ugliest smile, ugly gums uneven teeth ugly eyes," before deleting the tweet.
However, she later took to her Twitter account to add: "I won't deny calling @drake ugly," before appearing to regret her tweets.
She wrote: "I'm sorry about the tweets I said about @drake I didn't mean what I said. I hope to become friends with him instead of smashing him!"