(a)
Whoever knowingly provides or obtains the labor or services of a person by any one of, or by any combination of, the following means—
(1)
by means of force, threats of force, physical restraint, or threats of physical restraint to that person or another person;
(2)
by means of serious harm or threats of serious harm to that person or another person;
(3)
by means of the abuse or threatened abuse of law or legal process; or
(4)
by means of any scheme, plan, or pattern intended to cause the person to believe that, if that person did not perform such labor or services, that person or another person would suffer serious harm or physical restraint,
shall be punished as provided under subsection (d).