Sorry I don't have any direct Cle-Line experience. I've heard they are good but also heard country of origin varies by set. This link says owned by Chinese but made in USA. The plot thickens. Opinions seem to vary & of course what Americans have access to & what they pay is often different than us.
https://www.practicalmachinist.com/vb/general/drill-drill-bit-manufacturers-made-u-s-322585/
I can tell you my (uncoated HSS) Precision Twists have stood up very well. They still cut my fingers when I pull them out wrong haha. I use them interchangeably in steel & aluminum. However I bought them >10 years ago so if they have similarly farmed out to offshore manufacturing switch-a-roo I wouldn't have know about it. And there are examples of made in a different country but still same standards so who knows. I buy the odd replacement & they seem comparable.
I was Googling drills recently because I wanted a decent progressive set dedicated tip dubbing (for brass & bronze). The KBC brand which I believe were eastern block were 'ok', not bad but not awesome. I've also used some really nice drills like Guhring but were bought onsey-twosey usually metric or aluminum flute special sizes, not a set.