The Catholic Campaign for Human Development is an important voice in the fight to end poverty in America. 

Since 1970 when it was established by the U.S. Catholic bishops, CCHD has assisted people to rise out of poverty through empowerment programs that foster self-sufficiency. Through private donations and annual parish collections, CCHD has offered more than $260 million in support to nearly 4,000 self-help projects developed by grassroots groups of poor people in all 50 states, the District of Columbia, Puerto Rico and the U.S. Virgin Islands. Grants are awarded on the basis of need, not religious affiliation.

Many projects that I've supported and admired have received funding through CCHD.

The group offers an excellent website - Poverty USA - with a wealth of information about poverty and economic injustice in the United States.  Check it out and find ways that you and your congregation might become more involved with this issue.