The Tea Party believes in the reduction of the U.S. national debt and the economic activity that DAPA would create would help with that goal. The Tea Party believes in national security and DAPA would help to create accountability of immigrants in the country, taking people out of the shadows is national security. The Tea Party believes in conservative values, and what is more conservative than keeping families together?
http://www.cnbc.com/2016/04/25/the-tea-party-has-more-in-common-with-immigration-reform-advocates-than-you-think-commentary.html