I am not willing to scroll thru 146 and counting pages to see how many FLers apparently now live in the US. However, I am calling the bluff of 99.999% of all who makes this claim. This was NOT an issue until Upwork instituted the client option of "US applicants only". There is now a similar option in force for "UK applicants only". How many of the same mind-set will try for that?
U's decision to do this was based on BUYER REQUESTS. While I personally find it all distasteful, I can understand it for a few reasons.
1. command of the English language
2. time zone issues (for convenience only)
3. understanding of the marketing skills needed to effectively communicate with a buyer's targeted market
Whether you view it a unfair, mean, or whatever ... it is a fact of life. And it isn't going to change. Do us all a favor and stop trying to scam the system. This is the one rare and odd scenario where your scams will not work.
Upwork profile pages report where freelancers live. There is nothing on these pages about a freelancer's nationality.
So the answer to your question is: No.
You should not change your location to Colombia.