US President Donald Trump (Photo: AP)

Yvonne Mason, 61, a former high school English teacher in the US, became a latest internet celebrity after making notes across a letter bearing US President Donald Trump’s signature.

In the top left corner: “Have y’all tried grammar & style check?” At the top right: “Federal is capitalized only when used as part of a proper noun.” And toward the bottom: “OMG this is WRONG!”

Mason, a Democrat who lives in Atlanta, had written to Trump to ask him to visit each family of those who died in the shooting that killed 17 people at a school in Parkland, Florida, in February.

When she received the response, dated May 3 and printed on White House stationery, Mason started her habit of making corrections.

Mason expressed her concern for the grieving families who suffered losses in the shooting. But the letter she received did not address her concerns, instead listing the actions the government had taken.

In addition, there were errors. For example, “nation” was capitalized, as well as “states.” Mason circled both. “It was a poorly worded missive,” she said.

But she didn’t correct everything. “I did not mention the dangling modifier,” she said. “I focused mainly on mechanics.”

Compared with other letters she received from politicians, this letter stood out for its errors and poor tone, according to Mason.

The White House did not immediately respond to a request for comment.

(Compiled by Yang Chuchu)