falls within one of their 18 enumerated powers? If so, which one? Has President Obama cited which parts of the Constitution he believes gives the federal government the enumerated right to dictate such policies? If so, I haven't seen or heard him cite such.
Yes, it does.
HHS is a department of the Executive.
The Constitution explicitly allows Congress to make laws directing how this (well, any) Department of the Executive is to carry out its 'mission'*. Therefore, the healthcare legislation
is Constitutional.
*"The Department of Health and Human Services (HHS) is the United States government's principal agency for protecting the health of all Americans and providing essential human services, especially for those who are least able to help themselves."
Additionally, Article II, section 2:
He shall have power, by and with the advice and consent of the Senate, to make treaties, provided two thirds of the Senators present concur; and he shall nominate, and by and with the advice and consent of the Senate, shall appoint ambassadors, other public ministers and consuls, judges of the Supreme Court, and all other officers of the United States, whose appointments are not herein otherwise provided for, and which shall be established by law: but the Congress may by law vest the appointment of such inferior officers, as they think proper, in the President alone, in the courts of law, or in the heads of departments.
President Eisenhower proposed creating HEW as a Cabinet-level department; H.J.Res. 223 was passed in the House and Senate and signed by the President on April 1, 1953; HEW officially came into existence on April 11, 1953. The name was changed to HHS when the Department of Education was created as a Cabinet level department.
HHS: What We Do
Historical Highlights
Office of Education and Department of Health, Education, and Welfare; – FREE Office of Education and Department of Health, Education, and Welfare; information | Encyclopedia.com: Find Office of Education and Department of Health, Education, and Wel
The executive branch, creation and ... - Google Books
So it's all Constitutional and stuff.
My evil liberal leftist friend...

all you have shown is the creation of HHS. The mechanics of passing H.J. 223 were within the requirements for passage via the Constitution. That does not necessarily mean, that said legislation fits the confines of the Constitution.
I recognize and accept that the POTUS has the ability to seek a creation of or a modification to any particular Executive departments, via Congressional approval. The creation of such departments with Congressional oversight and funding must fall within the purview of Congressional oversight to begin with, via Article 1, Section 8, of the Constitution. If not, I do not believe such programs are congruent with the Constitution. Ergo, HHS and the various welfare and education departments located in HHS, are not within the purview of Congress, in my opinion.
If universal healthcare was a constitutional right to begin with, your point with the part of HHS that deals directly with the health aspect would be valid. But, universal healthcare is not a constitutional right. Said department oversight and funding does not fall within the Article 1, Section 8, of the Constitution. As such, Congress has no business overseeing and funding said department.
Technically speaking, an amendment to the Constitution is needed, to make HHS and the proposed distribution of universal healthcare thru said department all constitutional and stuff, if one believes in a strict interpretation of the Constitution.
You have offered up a worthy retort Emma, compared to several earlier replies. But, in the end, I do not agree with your supposition.