"As a church, we believe the stronger the bonds of family, the greater a person's chance of succeeding in life. The RAISE Act imposes a definition of family that would weaken those bonds,"
As a Catholic theologian, I have no problem with the RAISE Act.  Catholic theology does not demand that we grant unlimited immigration sponsorship opportunities to adult siblings of American citizens.  The RAISE Act protects children and spouses; it just does not encourage chain immigration and also recognizes that, given the economic incentives that drive immigration, a sovereign state has an interest in attracting economically qualified and viable candidates to its population and citizenry.  Don't see how that offends Catholic principles.