Colts are made in America and use almost 100% forgings or machined bar stock. This sets them apart from almost every other 1911 on the market.
I will agree that Colts are amazing 1911s and are pretty much the original ones behind the design with the genius John Moses Browning. But this statement isn't true of all 1911s. Off the top of my head, both S&W and Ruger make their 1911s 100% in the US. My S&W has a forged frame and slide, and the Ruger has a forged slide and cast frame. Springfield's lower-end models have cast frames, but their higher-end 1911s are American made with forged frames. I'm pretty sure Kimbers and Remingtons are also 100% US made but I won't stick to that claim without knowing for sure.
As for the OP, the TRP is a great gun. Springfield has some amazing 1911s. My buddy's Operator is beautiful and shoots like a dream. But, if you go with a Colt you're still making a good decision. Here is my Smith with a Remington Rand and my buddy's Operator.