He can prevent a law from being passed by not making a bill for it.
filibuster
The simple answer is that children were being mistreated, thus a law was passed to prevent this.
A law passed by a congressional representative for the purpose of proving to his/her constituents that he/she accomplished something
Spitting gum
Unfortunately, it was never passed. But it is still being lobbied, and it will likely be passed eventually.
Veto
A law passed by a congressional representative for the purpose of proving to his/her constituents that he/she accomplished something. Used to get re-elected, often has little/no direct impact on society.
A democracy is a democracy where the whole population votes onan issue (such as a new law trying to be passed) and in a represenative democracy there is a representative that has been elected by the people that votes on an issue. An example of a representative democracy would be the united states because the people of the U.S. vote on a representative for the senate and the house of representatives to vote on law that are trying to be passes.
a treaty from being a law
No, they sign bills into law and enforce the laws that exist. They do direct where and what laws will be passed, but the State's congress can prevent whatever they consider to be against the "will of the people" from being submitted to the Governor.
I think the immigration law is still being processed
A law that was passed by the legislature that was given a certain date on which it was to expire. When that date is approaching, or has passed, "the sun has set on it," (so-to-speak) and it goes out of existence.