Preamble Amendment under Article 368
The preamble of the Indian Constitution lays down the basic philosophy and fundamental values that guide the governance of the country. It is considered to be the soul of the Constitution. However, the preamble can be amended under Article 368 without altering the basic structure or philosophy of the Constitution.

Article 368 and Preamble Amendment
- Article 368 of the Indian Constitution deals with the power of Parliament to amend the Constitution. It provides for the procedure of amendment which includes the requirement of a special majority in both houses of Parliament.
- The Supreme Court has clarified that while the Parliament has the power to amend the preamble, it cannot alter the basic structure or philosophy of the Constitution.

Limitations on Preamble Amendment
- The Parliament cannot amend the preamble in a way that changes the basic features of the Constitution such as federalism, secularism, democracy, and the rule of law.
- Any amendment to the preamble that seeks to alter the fundamental principles of the Constitution would be considered unconstitutional.

Conclusion
In conclusion, while the preamble of the Indian Constitution can be amended under Article 368, it is essential to ensure that such amendments do not alter the basic structure or philosophy of the Constitution. It is important to uphold the core values and principles enshrined in the preamble while making any changes to it.