User Meta

$meta_query = array(
	'relation' => 'OR',
	array(
		'key'     => 'cm_government_id_verified',
		'value'   => 'a:1:{i:0;s:8:"verified";}',
		'compare' => 'NOT REGEXP',
	),
	array(
		'key'     => 'cm_government_id_verified',
		'compare' => '=',
	),
	array(
		'key'     => 'cm_government_id_verified',
		'compare' => 'NOT EXISTS',
	),
);