Would Trump change the E-2 visa treaty countries?

Unless Chile does something the President doesn’t like, the E-2 for Chile will continue (Trump did end the E-2 for Iran during his first term).

E-2 treaty countries are incorporated into the list through the establishment of treaties or equivalent agreements between the United States and the foreign country. Countries can be eliminated from the E-2 treaty country list if the treaty is terminated or if there are changes in U.S. immigration policy that affect the eligibility of nationals from certain countries. For example, Presidential Proclamation 9645, signed on September 24, 2017removing Iran from the list of EVisa eligible countries .
The power to terminate a treaty generally lies with the executive branch of a government, often requiring the involvement of the head of state or government, such as a president or prime minister. In the United States, the President has the authority to terminate treaties, although this power can be subject to checks and balances, including potential involvement or oversight by Congress. The EB-5 visa is not subject to these treaties and eligibility can only be changed by Congress.

I do not envision the current administration making modifications to existing treaties that will encourage trade and investment into the United States. While there are obviously concerns with some of the statements the President has made, in particular about imposing tariffs on Canadian and Mexican goods, there hasn’t been any serious discussion about tearing up existing trade agreements that have been in place for years, nor of tearing up the underlying treaties that exist between the United States and other countries.

I am not an immigration attorney, but my company has been preparing E visa business plans since 2009. From the very beginning, we have closely tracked
adjudication standards, including those during President Trump's first term (2017–2021).
In my opinion, as long as your E business meets the requirements of the law, benefits the U.S. economy, and creates U.S. jobs, there should not be
any major issues. That said, no one can predict with certainty how the new administration might handle E visas.
By the way, have you consulted with an immigration attorney about the E-1 visa? We have successfully prepared numerous E-1 business plans for Latin
American and European wineries expanding into the U.S.

I have not heard any current news that President Trump plans to reduce the number of countries eligible for the E-2 Treaty Investor Visa. Recent executive orders have focused on enhanced vetting of visa applicants and other immigration-related measures. I am unaware of any proposed changes to the E-2 visa program or its list of eligible countries.
It's important to note that the list of E-2 treaty countries can change over time due to new treaties or legislative actions. For instance, in recent years, countries like Israel, New Zealand, and Portugal have been added to the list after meeting specific requirements. I do not see why this Administration would remove Chile from the eligible list.
That said, I appreciate your vigilance in the matter. You should be aware that E-2 is a nonimmigrant visa type. It does not lead to immigrant status, that is, permanent residency. We are happy to consult with you if that is the route you want to take and offer you options that include EB-5.

Trump has not changed Chile's eligibility for E-2 visas, nor have I read that he has any interest at all in doing so. I doubt he could in any event because it appears to be a matter of treaty between Chile and U.S. Anyway, bottom line is Trump has made no such changes, nor am I aware of any rumours suggesting that he might.

It’s hard to say, but with the pro investment mentality perhaps there will be no changes.

There is no information that the E-2 treaty countries will change. Chilean citizens have options.

You really can not count on anything with the current administration. Veryy unpredictable. The E-2 is a non immigrant visa and is not a path to residency (green card). You should consult an experienced attorney to discuss both short and long term options to achieve your objectives.