how does livy portray foreigners, such as Lucius, tarquinius priscus, tanaquil and tullia, in contrast to romans?

He thought they lacked Roman virtue. They did things like:

Neglect religious observances/ ignoring portents and auspices

Engaged in treachery and tricks

Were prone to rashness and pride

Were full of vices like luxury, feasting, harlotry, drunkenness