What would happen if hawaii decided to become independent from the usa?

Hawai'i would be fvcked up for quite sometime. Then, it would turn into a developing country, or worse, an underdeveloped country (and good luck with finishing the Honolulu Rail).  

Out of about 1.4 million people that live in Hawai'i currently, I think that the new country of Hawai'i would lose, at least, 1 million people. I think that most Americans would go back to the mainland, instead of becoming a Hawaiian citizen (I know that I would probably be moving to Guam or Northern Mariana) and the non-Americans would probably move elsewhere as well.  

In 2019 (before COVID ruins everything), tourism industry in Hawai'i accounted for only about 21% of its economy, even though it was the largest sector in the local economy. As an independent nation, tourism would still be that main source of income for the island. But if there is another pandemic like COVID, then the local economy would suffer even worse than now (and without the stimulus check or PPP Loan for the residents or small businesses, and possibly, without an unemployment insurance).  

Military/Defense industry accounted for the 2nd largest sector in 2019. If Hawai'i were to gain independence, the U.S. would shut down all of its military bases and pull about 70,000 servicemen/women as well as many of the military contractors back to the mainland.

With so many people leaving, the real estate/rental/leasing industry, which accounted for the 3rd largest sector, would plunge for a long while. And construction industry would suffer as well. 

Other industries in Hawai'i such as agriculture, fishing, manufacturing, & power accounted for small percentages of the overall economy. That is the reason why we have to import 90% of the food, 63% of seafood, 90% of manufacturing goods, and 80% of the power/energy from the mainland and/or other countries. It would take a long time and a lot of money for an independent country to invest in those industries in order to become sustainable. Additionally, Hawai'i would have to go look for raw materials elsewhere to build stuffs as well. Furthermore, according to Bruce Mathews, Dean of College of Agriculture, Forestry and Natural Resource Management at the U of Hawai'i-Hilo, besides pineapples, sugarcane, root crops such as taro/kalo, potatoes or radish, the majority of the soil in Hawai'i is not very good in growing crops, because of the high concentration of acid in the soil. Most of the soil in Hawai'i was formed by volcanic ash (mostly on the Hawai'i/Big Island). 

I know that Hawai'i was, unjustly, annexed by the U.S. and many people are still upset about it; but being realistic about the present, I do not think that the U.S. would just let Hawai'i go that easy at this point. The U.S. wants to protect its Western border from being attacked and uses Hawai'i as a front door. Additionally, the headquarters of U.S. Indo-Pacific Command, U.S. Army Pacific, USMC Forces Pacific, U.S. Pacific Fleet, & U.S. Pacific Air Forces are all located on O'ahu in order to project its military power in East & Southeast Asia, especially now that China is rapidly building up its military force.

A constitutional fight

It would be broke probably 

i dont think we'll know unless that happens