BRUSSELS, July 18 (Reuters) - French President Emmanuel Macron on Tuesday criticised EU antitrust chief Margrethe Vestager's decision to hire a U.S. economist over a European to help oversee Big Tech, adding her previous work could lead to conflicts of interest. Macron added he was "attached to reciprocity", and noted that the U.S. and China would not have appointed an overseas national in such a role. Scott Morton will advise the European Commission on its investigations into Big Tech and its enforcement of a series of landmark rules to rein in tech giants. Macron pointed to her previous work for "many companies" as something that could also result in conflicts of interest. She said previous chief economists at the Commission had also done consulting work without posing any issues.

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Persons: Emmanuel Macron, Margrethe Vestager's, Vestager, Fiona Scott Morton, Barack Obama's, Macron, Scott Morton, Jean Tirole, Scott Morton's, Sudip Kar, Bernadette Baum, Sharon Singleton, Jan Harvey Organizations: Big Tech, U.S . Department of Justice, European Union, Commission, Thomson Locations: BRUSSELS, Europe, China