The former Fox News host started dating the first son last May.
The first son took to his social media to make the exciting announcement on Tuesday morning, with photos of himself and his wife with their 1-year-old son, Eric Luke Trump. Some of the thousands of people who have responded, however, are not as delighted.
President Trump's daughter-in-law was criticized for calling the ongoing shutdown a "little bit of pain" for furloughed workers, prompting comparisons to Marie Antoinette.
Lara Trump says that federal workers missing paychecks are going through just "a little bit of pain" for the betterment of the country.