Is it legal to make short term trades?
No
Yes
Try to use punctuations Largesh
You can but profits needs to be transferred to a citizen, and that citizen has to report it to IRS and get it notarized every time.
Yes once you purchase a stock you can only sell it after you get GC.
You can buy, but your profits will have to go to asylum seekers coming through southern wall all the way from China.
As long as you pay tax, you are good
Only as long as you are losing