I quote without (much) comment. The headline is from the New York Times report. Here are the lead snippets.
A longtime employee of the Trump Organization took responsibility for lifting two passages, from a 2008 speech by Michelle Obama, for Melania Trump’s address on Monday at the Republican National Convention, saying that it was an innocent mistake.
The employee, Meredith McIver, who has worked on some of Mr. Trump’s books, appears to be the first person to publicly apologize for an error at any point during the Trump campaign. The New York Times on Tuesday night identified Ms. McIver as playing a role in the speech, although the extent of her involvement was unclear, and the Trump campaign declined to answer questions. Ms. McIver was brought in after Ms. Trump discarded the majority of a draft written by two professional speechwriters.
Read the NY Times report for more of the admission from McIver.