On Saturday afternoon, Mr. Kushner’s sister Nicole Meyer made a pitch to attract $150 million in financing for a Jersey City housing development, known as One Journal Square, to more than 100 Chinese investors gathered at the Ritz-Carlton Hotel in Beijing.

The money would be provided through a much-criticized government program known as EB-5 that awards foreign investors a path to citizenship in exchange for investments of at least $500,000 in American development projects.

Speaking in a ballroom, Ms. Meyer said the project “means a lot to me and my entire family.” She mentioned her brother’s service as chief executive of Kushner Companies, the family business from which he resigned in January, saying he had left to serve in the Trump administration.