Under the U.S. Immigration and Nationality Act, citizens of the United States are allowed to sponsor their spouses in regards to immigration. But same sex parents are not technically considered "spouses," so families are being torn apart. In February 2013, the Senate and House of Representatives began discussing the Uniting American Families Act. This act seeks to provide protection to same-sex partners by keeping families together. If this act gets passed, same sex families would be considered "permanent partners," and under this definition, they would be able to sponsor their family for immigration purposes.
There are many minority groups who have to deal with discrimination every day. While it is impossible to completely end this discrimination, the Uniting American Families Act will help these individuals who face hardships within the LGBT community and the immigration system. One step at a time, no matter how small, reformation is seeking to end this discrimination, so people are not penalized for just being different.
More information for the Uniting American Families Act and the definition of "permanent partners" can be found here: http://www.hrc.org/resources/entry/uniting-american-families-act