Conversation so far:
What did Michael Portillo do in government?
In 1987, Portillo was given his first ministerial post, as Parliamentary Under-Secretary of State for Social Security
Did Michael Portillo have any other government roles besides his role as Parliamentary Under-Secretary of State for Social Security?
Afterwards, he was promoted to Minister of State for Transport

Question: What kinds of issues was he involved in?
Self-contained rewrite: What kinds of issues was Michael Portillo involved in?