>Right, so you assume (and conclude) the possibility and necessity of a perfect enforcement procedure which will never detain a US citizen.

No. Just follow the law[0]:

   (a) Issuance. If the complaint or one or more affidavits filed with the 
   complaint establish probable cause to believe that an offense has been 
   committed and that the defendant committed it, the judge must issue an arrest 
   warrant to an officer authorized to execute it.

[0] https://www.law.cornell.edu/rules/frcrmp/rule_4