The correct answer to this open question is the following.
The federal government has only those powers named in the Constitution - Strict construction.
The federal government has some implied powers not listed in the Constitution - Loose construction.
The federal government can do anything it needs to do to carry out its constitutional duties - Loose construction.
In United States politics, when we refer to strict constructions, this means that the US federal government is tight with limited powers. On the other hand, when we talk about loose construction, this means that the federal government has more or broader powers granted by the US Constitution to make decisions that benefit the American citizens.