Unless you turn yourself in, a police officer will arrest you at the first opportunity regardless of what your are doing or what problem it causes to you. You may be arrested at work and then fired, you may be arrested at home and your kids put in foster care. You will be booked and photographed and held until you appear in front of a judge for the shoplift and the failure to appear. You will probably be held until trial because you already failed to appear once.
Nothing
Failure to pay a shoplifting fine can have serious consequences. In most states, failure to meet terms of one's sentencing will result in an arrest warrant and little leniency from a judge.
If it's an arrest warrant, sure. Doesn't matter what it's for, though it sounds more like a bench warrant for contempt of court, when someone failed to show for a hearing on overdue child support.
If you are clean and not wanted - nothing happens. He/she goes to jail. You go home.
Yes, it would be Contempt of Court and a warrant could be issued.
Will the police come to your house on a bench warrant for a failure to appear at cost and fines hearing
If the state of MI entered the warrant into the NCIC computer system, yes he could, and you would undoubtedly be arrested as a fugitive.
A bench warrant is issued because of the non-appearance of the defendant then - obviously, without a defendant, the hearing/trial date is "vacated" (cancelled).
A warrant is a demand issued by a court. An example is; an arrest warrant is a demand for someone's arrest. A foreign warrant is issued for someone in another country.
No, a police officer in Texas cannot arrest you solely based on a shoplifting misdemeanor warrant from Florida. Generally, warrants are only valid within the jurisdiction they were issued. However, if the police officer in Texas discovers the warrant during the interaction, they may notify the Florida authorities, who can then take appropriate steps to apprehend you.
Yes.
Things aren't going to go too well for the individual that didn't show up. If there is probable cause to believe that he was involved a warrant may be issued for his arrest. If the hearing that he missed was a "judicial" hearing a bench warrant may be issued for him. The fact that he failed to show up might even be used as a 'tacit admission' that he is, in fact, guilty of the offense.