Why was the future of the international space station placed in doubt in 2003?

The future of the International Space Station was placed in doubt in 2003 because space shuttle flights were suspended after the "Columbia" disintegrated during re-entry.

I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.