Well... for one thing...

[last lines] [Harry and Archie have crashed a train into Mexico. The federales show up] Federale Captain:
Buenos dias señores. Put up your hands. I'm afraid you're under arrest. [the federales aim their guns at Harry and Archie] Harry Doyle:
Eh, now wait a minute, wait a minute. This ain't fair! Federale Captain:
No? Archie Long:
Señor, there's twelve of you and... just two of us. Federale Captain:
Si? Harry Doyle:
A-and you got guns, and we got nothin'. Federale Captain:
But this is how we put you under arrest señor! Archie Long:
Where we come from... [points back to the US] Archie Long:
...they've got rules about making arrests. Federale Captain:
Rules? [Harry and Archie nods] Archie Long:
Si. Federale Captain:
What kind of rules? [Harry and Archie glance amused at each other with a "here we go again" look] Archie Long:
Well... for one thing... [Archie kicks the captain in the crotch]