Possible Clues:

• 'That the — are able to bear taxation is indubitable' (Samuel Johnson)
• Middleman means holding old police force from New York
• The Mexicans, for instance, have been in California for a long time
• A man cries out in The Bostonians
• One of the A's in ADA
• Those who voted for Trump remain as annoyed about Clinton's front
• People like 6 down using iMacs near Barking
• New Yorkers, e.g.
• Heartland residents ("Middle")
• Can armies be found over in New York, say