The correct answer is "A" and "C".
Throughout his presidency, Barack Obama was always highly supportive of executing an immigration reform. He was in favor of granting the possibility of obtaining citizenship for many illegal people living in the country. An intention he would formalize with the comprehensive immigration bill. However, this bill would not pass Congress. Regarding the children of illegal people who were born in the country, President Obama supported the passage of the DREAM Act, who offered them a multi-stage process of obtaining residency.