Some of the most used platforms for travel and online shopping said Tuesday they’re going to team up to battle fake reviews.

Microsoft says the U.S. Labor Department is scrutinizing its efforts to boost Black employment and leadership at the tech company. The Labor Department did not respond to a question about whether it has started similar inquiries into other companies with federal contracts. The Trump administration’s move contrasts with a flurry of efforts by private companies and institutions to increase racial diversity in the wake of the Black Lives Matters protests. The Labor Department said its Microsoft inquiry follows a 1965 order signed by Democratic President Lyndon B. Johnson banning discriminatory hiring among federal contractors. It sets up a hotline for the Labor Department to investigate workplace training session complaints.