I am not sure about US Bank,
But I just got a LOC with Andrews FCU,
They told me in order to increase my limit I would have to do a whole new application and another hard pull. No guarantee of increase. And they would'nt tell me what would qualify me for a bigger limit.
So what I got is what I will have. Which I am happy with. I don't plan on using it much, since the interest start from the moment you use it. But its nice to have a cash option should I need it, unlike the CLOC from NFCU.
