Make Woocommerce checkout phone field not required based on shipping country - woocommerce

Question

I saw this question come up before but it was answered reversely.
I would like question answered exactly as asked. I would like the phone number field to change from required to optional if a country is chosen.
I currently have the phone number field is required for all countries. I would like that if United States is chosen then phone number should be change to optional.
For reference, here is original posthttps://stackoverflow.com/questions/55206672/make-woocommerce-checkout-phone-field-optional-based-on-shipping-country and below is the code to have list of countries changed to required.
// SETTINGS: The countries codes (2 capital letters) in the array
function defined_countries_for_phone_field(){
return array( 'GB', 'JE', 'GG', 'IM' );
}
// Remove "(optional)" from non required "Billing phone" field
add_filter( 'woocommerce_form_field' , 'remove_checkout_optional_fields_label', 10, 4 );
function remove_checkout_optional_fields_label( $field, $key, $args, $value ) {
// Get the defined countries codes
$countries = defined_countries_for_phone_field();
// Get Customer shipping country
$shipping_country = WC()->customer->get_shipping_country();
// Only on checkout page and My account > Edit address for billing phone field
if( 'billing_phone' === $key && ( ( is_wc_endpoint_url( 'edit-address' )
&& in_array($shipping_country, $countries) ) || is_checkout() ) ) {
$optional = ' <span class="optional">(' . esc_html__( 'optional', 'woocommerce' ) . ')</span>';
$field = str_replace( $optional, '', $field );
}
return $field;
}
// Make the billing phone field optional (by default)
add_filter( 'woocommerce_billing_fields', 'filter_billing_phone_field', 10, 1 );
function filter_billing_phone_field( $fields ) {
// Get the defined countries codes
$countries = defined_countries_for_phone_field();
// Get Customer shipping country
$shipping_country = WC()->customer->get_shipping_country();
// Only on checkout page and My account > Edit address
if ( ( is_wc_endpoint_url( 'edit-address' )
&& in_array($shipping_country, $countries) ) || is_checkout() )
$fields['billing_phone']['required'] = false;
return $fields;
}
// Real time shipping country selection actions
add_action( 'woocommerce_after_order_notes', 'custom_checkout_scripts_and_fields', 10, 1 );
function custom_checkout_scripts_and_fields( $checkout ) {
$required = esc_attr__( 'required', 'woocommerce' );
// Get the defined countries codes
$countries = defined_countries_for_phone_field();
// Hidden field for the phone number validation
echo '<input type="hidden" name="billing_phone_check" id="billing_phone_check" value="0">';
$countries_str = "'".implode( "', '", $countries )."'"; // Formatting countries for jQuery
?>
<script type="text/javascript">
(function($){
var required = '<abbr class="required" title="<?php echo $required; ?>">*</abbr>';
var countries = [<?php echo $countries_str; ?>];
if($('.shipping_address').is(':visible')) {
// ship to different country selected
var selectedcountry = $('#shipping_country option:selected').val();
} else {
var selectedcountry = $('#billing_country option:selected').val();
}
//var selectedcountry = $('#shipping_country option:selected').val();
var phoneCheck = 'input#billing_phone_check';
var phoneField = '#billing_phone_field';
function actionRequire( actionToDo='yes', selector='' ){
if ( actionToDo == 'yes' ) {
$(selector).addClass("validate-required");
$(selector+' label > .required').remove();
$(selector+' label').append(required);
} else {
$(selector).removeClass("validate-required");
$(selector+' label > .required').remove();
}
$(selector).removeClass("woocommerce-validated");
$(selector).removeClass("woocommerce-invalid woocommerce-invalid-required-field");
}
// Default value Once DOM is loaded (with a 300 ms delay)
setTimeout( function(){
if($('.shipping_address').is(':visible')) {
// ship to different country selected
var selectedcountry = $('#shipping_country option:selected').val();
} else {
var selectedcountry = $('#billing_country option:selected').val();
}
actionRequire( 'no', phoneField );
if( $.inArray( selectedcountry, countries ) == -1){
actionRequire( 'yes',phoneField );
$(phoneCheck).val('1');
}
}, 300 );
// Live value
$( 'form.checkout' ).on( 'change', '#billing_country, #shipping_country, #ship-to-different-address-checkbox', function(){
setTimeout( function(){
if($('.shipping_address').is(':visible')) {
// ship to different country selected
var selectedcountry = $('#shipping_country option:selected').val();
} else {
var selectedcountry = $('#billing_country option:selected').val();
}
if ( $.inArray( selectedcountry, countries ) == -1) {
actionRequire( 'yes' ,phoneField );
$(phoneCheck).val('1');
} else {
actionRequire( 'no' ,phoneField );
$(phoneCheck).val('0');
}
}, 300 );
});
})(jQuery);
</script>
<?php
}
// Phone number validation, when the field is required
add_action('woocommerce_checkout_process', 'billing_phone_field_process');
function billing_phone_field_process() {
// Check if set, if its not set add an error.
if ( ! $_POST['billing_phone'] && $_POST['billing_phone_check'] == '1' )
wc_add_notice( __( 'Please enter a number phone.' ), 'error' );
}