Melania Trump took to Twitter Wednesday morning to confirm that "with 100% certainty, I correctly went through the legal process when arriving in the USA."
She posted the message along with the letter from her lawyer.
The letter comes after questions were raised about whether she worked illegally as a model in the U.S. while on a visitor visa in 1995.
"I can unequivocally state that these allegations are not supported by the record, and are therefore completely without merit," attorney Michael J. Wildes writes in the letter.
The 46-year-old third wife of Donald Trump has been the subject of speculation in recent weeks for not appearing on the campaign trail alongside her husband.
Twitter has been buzzing with hashtags #wheresmelania and #freemelania.
“She seems to have gone into hiding,” went one tweet.
After Anderson Cooper 360 posed the question in an article posted to Twitter last week, Melania actually responded, saying: "enjoying my life & family and loving our country!"
The last time Melania spoke in public was July 18 at the Republican National Convention, where it was revealed portions of her speech were lifted from Michelle Obama's remarks at the 2008 Democratic Convention.
She was spotted in the audience at the Commander-in-Chief forum last week and was seen over the weekend at the funeral of conservative icon Phyllis Schlafly.
On CNN’s New Day Monday, political analyst Kirsten Powers said: “She wants to stay at home and take care of her son. She's not somebody who, I think - she's, obviously, not an overly political person. And I — I don't think she really wants to do it. And if she doesn't want to do it, and she's not comfortable, then it's not really going to help him.”