diff --git a/index.html b/index.html
index 364551e..3e8c3f7 100644
--- a/index.html
+++ b/index.html
@@ -56,6 +56,7 @@
 
 
 	jQuery('input[name="telefone"]').maskx({maskx: 'phone'});
+	jQuery('input[name="telefone-usa"]').maskx({maskx: 'phone-usa'});
 
 	jQuery('input[name="peso"]').maskx({maskx: 'weight'});
 });
@@ -92,9 +93,12 @@ <h1>Plugin jQuery.maskx com REGEX</h1>
 	<label><span>Telefone</span>
 	<input type="text" name="telefone" maxlength="15" /></label>
 
+	<label><span>Telefone (USA)</span>
+	<input type="text" name="telefone-usa" maxlength="14" /></label>
+
 	<label><span>Peso</span>
 	<input type="text" name="peso" maxlength="8" /></label>
 
 
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/src/jquery.maskx.js b/src/jquery.maskx.js
index 9e3d320..daf5a05 100644
--- a/src/jquery.maskx.js
+++ b/src/jquery.maskx.js
@@ -98,6 +98,12 @@
 		v = v.replace(/(\d)(\d{4})$/, "$1-$2");
 		return v;
 	};
+	plugin['phone-usa'] = function (v) {
+		v = v.replace(/\D/g, "");
+		v = v.replace(/^(\d{3})(\d)/g, "($1) $2");
+		v = v.replace(/(\d)(\d{4})$/, "$1-$2");
+		return v;
+	};
 	plugin.rg = function (v) {
 		v = v.replace(/\D/g, "");
 		v = v.replace(/(\d)(\d{7})$/, "$1.$2");
@@ -110,4 +116,4 @@
 		v = v.replace(/(\d{1})(\d{2})(\d{2})/, "$1:$2.$3");
 		return v;
 	};
-}());
\ No newline at end of file
+}());