It was really impressive the way that so many elected Republicans called her out for her disdain of American traditions. Oh, they didn’t? I guess they were scared.
Two, they don't want to spend their influence on this, because they won't have any when something important comes up. Indignation wears out. Complain about everything and people don't listen when you really have something to complain about.
Three, they don't want to give her the attention. She's nobody. Why make her somebody? Why give her the publicity she craves? And do you think an outcry would hurt her? No, she wants to irritate more conservatives than Rachel Maddow or anybody else on the channel. It would be a win for her.
Four, they probably haven't even heard about this. Make enough noise and maybe they'll notice and care, but they are pretty busy.