Call me an evil conservative, but these would be ones I want
. Abolish all abortion rights unless demanded by a doctor for the health of the mother
. Abolish marriage in legal lexicon, replace it with civil unions
The second one could solve the whole same sex marriage debate. I personally think marriage is a religious issue, and should be left up to each individual house of worship. These civil union would have all the same rights as a married couple currently has.
All the more reason I oppose single issue amendments. On what grounds do you use the US constitution to ban a medical practice? The only logically consistent rationale would be to that it impinges on a fundamental human right. Thus, pass an amendment recognizing the fetus as a human being and extending it the basic civil right of "life", without even mentioning abortion. Although I oppose this, "Right to Life" amendments at least stem from a logically coherent ethical system and have antecedents in previous amendments extending basic rights. "Anti-abortion" amendments do not.
I have less problem with your other amendment, but in practice, it would be virtually impossible to ban the term "marriage" from all local, state, and federal legal systems. Also, under your amendment, would "civil unions" be extended to unmarried hetrosexual couples, or other groups of people living together in pairs or larger groups who wish their "union" (sexual or otherwise) to be given legal status equivalent to that of the "traditional" family? The whole push behind civil unions is gay rights, not an over-riding need to redefine marriage. If you favor extending full rights to gays, the more honest aproach would be to craft a new amendment extending equal protection of the law to all people, regardless of their sexual orientation, period. Then they have the right to get married in a civil ceremony, period, and religious groups can follow their own mandates when blessing or recognizing such unions.