How many members are needed to override a presidential veto?

290 members.

Explanation:

Override a presidential veto is the process to pass a bill over the president's objection. To be able to do it, it is necessary to have a two thirds vote in each Chamber. The are 435 members, which means that it will be required to have 290 members to pass the bill.

i think it can have both positive and negative effects on businesses.

for example:

lets say you own a small business and taxes go up 4% that means it is going to cost your business more money to buy product to sell. but at the same time you make more money from the tax rise.

that is my theory.

more people will not obey the law or vice vice versa

explanation: the answer really speaks for itself if the number of prisoners are going up then that means that more people will not obey the law and if less people are going to prison then that means that more people are obeying the law.