Ted Cruz’s campaign is a little more than 24 hours old and he is already taking on Jeb Bush.

In an interview with conservative radio host Laura Ingraham Tuesday morning, Cruz hit Bush and other potential 2016 candidates over their support immigration reform and amnesty, as well as Common Core, in the past.

After Ingraham told him that Jeb claims to have “the grown up plan” on immigration, Cruz said he hasn’t seen much success amongst politicians “when they treat voters like children,” adding that’s the strategy of President Barack Obama and Hillary Clinton.