In what year did all U.S. states, including the District of Columbia, have a credentialing process (generally called licensure) for social workers?

Name: In what year did all U.S. states, including the District of Columbia, have a credentialing process (generally called licensure) for social workers?
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Quizplus · Accepted Answer

By 1993, all U.S. states and the District of Columbia had established a credentialing process for social workers, ensuring standardized qualifications and professional accountability across the nation.

In What Year Did All U