What is the supreme courts role in cases where two states are involved in a legal battle?

The Supreme Court is the final judge in all cases involving laws of Congress, and the highest law of all — the Constitution. The Supreme Court, however, is far from all-powerful. Its power is limited by the other two branches of government. The President nominates justices to the court.

the answer is: must pay taxes on profits

since it is considered as a part of your income, profits from investments is eligible for tax payment.

the tax from your investment could be influenced by how long you decided to sell it. united states promotes keeping your investment for long term period. so, the tax rate for investments that you sell in less than one year is typically higher compared to investments that you sell in more than one year period.

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.