unfortunately it can be
Yes, any law can be repealed or modified by another law, and any part of the Constitution can be repealed or modified by another Constitutional Amendment except those that specifically say they can't be.
refuse to sign it into law.
after the: mayor governor president sign it into law
No, if the law has been repealed then it is inactive and is not a legal basis for anything.
When a law has been repealed, it means "to rescind or annul by authoritative act". In other words, that law is no longer a law.
Yes. In order to repeal a law, Congress must introduce new legislation which states that a previous law (Health Care Reform, Don't Ask Don't Tell) is repealed. Theoretically, if the Senate did pass a bill which repealed the Health Care Reform Act, then it's up to President Obama to veto the bill. This would place the veto subject to an override by a 2/3 super majority in each chamber of Congress. Currently, the House does not have to votes to over ride a Presidential veto.
James Madison repealed the Embargo Act.
no
yes!
yes!
he can sign it and make it a law or he can veto it(reject)
FDR