What did the Fugitive Slave Act do?

Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That the persons who have been, or may hereafter be, appointed commissioners, in virtue of any act of Congress, by the Circuit Courts of the United States, and Who, in consequence of such appointment, are authorized to exercise the powers that any justice of the peace, or other magistrate of any of the United States, may exercise in respect to offenders for any crime or offense against the United States, by arresting, imprisoning, or bailing the same under and by the virtue of the thirty-third section of the act of the twenty-fourth of September seventeen hundred and eighty-nine, entitled "An Act to establish the judicial courts of the United States" shall be, and are hereby, authorized and required to exercise and discharge all the powers and duties conferred by this act.

the group i'm selecting: greeks.

a first group of greek immigrants came to the us in the 1850s. the second group came to america starting in the 1890s due to economic opportunities they didn't have back in their home caused by the hardships of ottoman rule. greek immigration was 90% male, many of them expected to work and return to greece after earning enough capital, but ultimately had to remain in the us after the greek genocide.