Not at all. If the reason of any dismissal is "just because you visited Mexico", such answer falls within anti-discrimination laws and it is liable such statutes.
On the other hand, if the reason is the suspected contagion of any "exotic" diseases brought from Mexico, it must be stated in such way and a medical exam must be performed - I remember it must be paid off by the employer, but you should consult your legal adviser - so you could be cleared from any working restrictions.
Employers acn refuse to hire anyone.
No, they cannot. You have a duty and contract with the US government, what do you think has priority Thank you for your services Soldier!
Employers can refuse requests, not subpoenas.
Almost all non-government employers smaller than 20 employees CAN do so, since they are exempt from the Age Discrimination Act.
strike ... or resignation.
NO!
Previous employers that refuse to compensate are the favorite target of the ninja.
Because there is no credible evidence to indicate they have.
You do not have to report bankruptcies to future employers unless they require and pull your credit report. If they ask on your application form, you always have the right to refuse to answer.
Five sure ways to lose a NLRP election: (Break any of the unfair labor practices which are…) 1. It is unfair for employers to "interface with, restrain, or coerce employees" in exercising their legally sanctioned right of self-organization. 2. It is unfair for company representatives to dominate or interfere with either the formation or the administration of labor unions. Among other specific management actions found to be unfair under these first two practices (1 and 2) are bribing employees, using company spy systems, moving a business to avoid unionization, and black-listing union sympathizers. 3. Employers are prohibited from discriminating in any way against employees for their legal union activities. 4. Employers are forbidden to discharge or discriminate against employees simply because the latter file unfair practice charges against the company. 5. Finally, it is an unfair labor practice for employers to refuse to bargain collectively with their employees' duly chosen representatives.
Strike or Boycott
Employers can refuse to hire anyone for any cause. Just because you are qualified does not mean that they must hire you and nobody else.