Plz solve these true or false questions

9. Once a union is certified as the collective bargaining agent, its negotiations apply to all workers in the bargaining unit, even those who do choose to not belong to the union. 10. An employer who wants to help a noncitizen obtain a green card must show that no American workers is qualified, willing and able to take the job for which the employer is looking to hire: and the employer must also offer the noncitizen worker no less than the prevailing wage for the position, including fringe benefits