To amend the Immigration and Nationality Act to expand the H-2A worker program to include certain additional laborers, and for other purposes.

Defending the Agricultural Industry's Requirements Year-round Act of 2017 or the DAIRY Act of 2017 This bill amends the Immigration and Nationality Act to include in the H-2A nonimmigrant visa category (temporary agricultural workers) an alien coming temporarily to the United States to perform agricultural labor or services as a dairy worker. The initial period of admission for such dairy workers shall be 18 months, which may be extended for additional 18-month periods. No period of absence from the United States shall be required for such extensions.