U.S. nuns meet to decide how to respond to Vatican rebuke

* Group's first national assembly since Vatican rebuke

* Represents 80 percent of US Catholic nuns

ST. LOUIS, Aug 7 (Reuters) - The largest group for American

nuns begins a four-day meeting in St. Louis on Tuesday to

consider a response to the Vatican's decision to assign

effective control of the group to a trio of bishops because the

nuns had strayed from church doctrine.

The Leadership Conference of Women Religious is conducting

its first national assembly since church leadership accused the

group of focusing too much on social-justice issues such as

poverty and not enough opposing abortion, gay marriage and

euthanasia.

The Vatican Congregation of the Doctrine of the Faith also

criticized the group for remaining quiet as some nuns publicly

challenged U.S. bishops on matters of church doctrine, including

ordination of women and public policy.

The Vatican has put the organization under the effective

control of three U.S. bishops, who have the power to rewrite its

statutes, meeting agendas and liturgical texts. The decision has

led to protests and vigils across the country in support of the

nuns.

The organization represents 80 percent of the 57,000 U.S.

Roman Catholic nuns, and about 900 sisters from 320 communities

are registered to attend, according to the LCWR president,

Sister Pat Farrell.

Farrell said in a press call last week that the conference

will include "time for prayer and communal reflection and

thoughtful consideration and, very importantly, time to listen

to one another." She said the LCWR finds it "absolutely

critical" to get a sense of how the membership is thinking.

"One of our concerns is that questioning is seen as

defiance," Farrell said.

MAYBE NO DECISION

It is possible that no decision will be reached by the end

of the Assembly, but private sessions will give leadership a

sense of the "leaning" of the group, Farrell said.

In early June, LCWR issued a statement calling the Vatican's

rebuke "unsubstantiated" and "the result of a flawed process

that lacked transparency."

Some nuns have suggested that the LCWR, which was founded in

1956 at the request of the Vatican, might dissolve its official

ties with the church and become an independent nonprofit group.

Others have said that the best course may be to stall and hope

Vatican scrutiny will fade with time.

The U.S. bishop assigned to supervise reform of the group,

Archbishop Peter Sartain of Seattle, will meet with LCWR leaders

soon after the Assembly, said Sister Mary Ann Walsh, a

spokeswoman for the U.S. Conference of Catholic Bishops. Both

sides have tried to be "prayerfully collaborative," Walsh said.

Bishop Leonard Blair of Toledo, Ohio, who is assisting

Sartain in reviewing the group's work, disputed the idea that

the Vatican action was a crackdown.

Blair, in an interview on National Public Radio's "Fresh

Air," said it was meant to be an effort to work with the group

"to have them enter into dialogue with us in order to remedy

what we feel are serious doctrinal concerns."

But Blair, who conducted the Vatican's doctrinal assessment

of the LCWR, said that "no middle ground" is possible on matters

of faith and morals.

John Gehring, Catholic program director for Faith in Public

Life, a liberal advocacy group, said he did not think the LCWR

would make a "quick, snap judgment." He called the gathering

"the most important meeting in the history of the LCWR."

"Catholic sisters face a defining moment and want to remain

true to their broad social justice mission in a time when the

church is increasingly conservative and narrowly focused on

issues like same-sex marriage," Gehring said. "There is a lot at

stake."

The conference opens Tuesday evening and concludes Friday.

Farrell is expected to speak at a press conference Friday

afternoon.

(Reporting By Mary Wisniewski; Additional reporting by

Stephanie Simon; Editing by Vicki Allen)