Conversation so far:
What was the AFL?
The American Federation of Labor (AFL) was a national federation of labor unions in the United States founded in Columbus, Ohio.
What was the CIO?
The Congress of Industrial Organizations (CIO) was a federation of unions that organized workers in industrial unions in the United States and Canada from 1935 to 1955.
When did the AFL and the CIO merge?
On December 1955 a joint convention in New York City merged the two federations, creating the AFL-CIO.
What leadership position did he hold with the AFL?
George Meany was president of the AFL-CIO.
What did he want the merger with CIO to accomplish?
George Meany sought to unify a divided labor movement.
what happened after the merger?
In 1957 George Meany expelled the Teamsters Union, led by Jimmy Hoffa, from the AFL-CIO, and he lost the United Auto Workers in 1968.

Question: Were there any difficulties with the merger?
Self-contained rewrite: Were there any difficulties with the merger?