Melania Trump gave her first public speech since the Republican National Convention, when she was accused of plagiarising Michelle Obama. Despite overcoming the national embarrassment of stealing words directly from the First Lady, Ms Trump faces those accusations yet again.

But this time she is accused of stealing a line from Mr Trump’s second wife, Marla Maples.

Speaking at a campaign event in Berwyn, Pennsylvania, Ms Trump made her case for why voters should choose her husband.

“He will make fantastic president of the United States," she said.

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She highlighted her love for the US shared with her husband, and recalled her life back in Slovenia, before immigrating in the 1990s.

“It was a beautiful childhood. My parents were wonderful,” she said. “Of course we all knew about this incredible place called ‘America’. …

“America meant, if you could dream it, you could become it.”

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Educator and amateur historian Yoni Brander first pointed out the line on Twitter, which appears to be lifted from a 2011 interview with Ms Maples.

“Even though I was from a small town of 500 people, I learned to dance, play clarinet, and play trumpet, all while playing every sport I was allowed to as a southern-born tomboy,” Ms Maples, who was married to Mr Trump from 1993 to 1999, said. “I believed if you could dream it, you could become it…”

The quote appears to be a variation of a well-known maxim credited to 20th century American writer William Arthur Ward – "If you can imagine it, you can create it. If you can dream it, you can become it" – Mr Brander noted.

He explained to The Independent that the use of the quote may not necessarily indicate a direct copy of the Marla Maples line.

"My sense is that it may be a little more complicated than Twitter allowed for, because it is not just that they are the only two who used this exact abbreviated misquote," he said, "but ... the whole paragraph in the interview parallels nicely with the themes of the speech.

"Not sure if Melania is taking from the Maples piece directly or there is a link. Maybe that is the way [Donald Trump] has them frame their bios – in a very formulaic way."

Ms Trump came under fire during the RNC in July after she recited a near-verbatim passage from Ms Obama’s 2008 speech.

Michelle melania speech plagiarized

“From a young age, my parents impressed on me the values that you work hard for what you want in life,” she said. “That your word is your bond, and you do what you say and keep your promise. That you treat people with respect. They taught and showed me values and morals in their daily life.

“That is a message that I continue to pass along to our son. And we need to pass those lessons onto the many generations to follow. Because we want our children in this nation to know that the only limit to your achievements is the strength of your dreams and your willingness to work for them

In her speech Ms Obama said: “That is a message that I continue to pass along to our son. And we need to pass those lessons onto the many generations to follow. Because we want our children in this nation to know that the only limit to your achievements is the strength of your dreams and your willingness to work for them.