A bill which aims to make it illegal to buy sex is back at France's lower house of Parliament for the second time with the two houses sharply divided.

Supporters argue it would help fight human trafficking networks, while opponents defend those who buy sex from France's 40,000 prostitutes.

The lower house wants to penalize clients and lighten punishment for soliciting; the upper house wants the reverse, and rewrote the bill accordingly in March.

Prostitution is currently legal in France, but prostitutes are often arrested and charged for soliciting in public. Brothels, pimping, and the sale of sex by minors is also illegal.