Tan said there were many views on such a law.

“We brought it up before because we have always maintained that such crossovers are a form of ‘betrayal’ to the people.

“But everyone has their different views on politicians jumping over to the other side. Any talk on anti-hopping laws will need the consensus of all four PH parties,” he told reporters today.

At least 10 Umno MPs have confirmed quitting the party since Wednesday, fuelling speculation of an exodus that would leave the party crippled before the year’s end.

Yesterday, six Umno MPs, namely Larut MP Hamzah Zainuddin, Tasek Gelugor MP Shabudin Yahya, Hulu Terengganu MP Rosol Wahid, Tanah Merah MP Ikmal Hisham Abdul Aziz, Mersing MP Latiff Ahmad and Sabak Bernam MP Mohd Fasiah Fakeh announced that they have quit Umno.

It came two days after dozens of Sabah MPs, assemblymen, senators and division leaders quit Umno.

Umno, which won 54 seats in the May 9 general election, is now left with 37 seats.

Many Pakatan Harapan leaders have called for an anti-hopping law when they were in the opposition.

In 1992, the Supreme Court struck down an enactment passed by the PAS-led Kelantan state government to bar elected representatives from switching parties, saying it violated freedom of association under the Constitution.

Tan, who is six-term Cheras MP, said DAP would not stop anyone from joining PH.

But he said the party wanted doors shut to prevent those facing criminal charges or who were being investigated.

“It doesn’t matter who they used to be, a senior minister or anything. We will not accept such people,” he said, echoing concerns voiced by other DAP leaders.

On Thursday, Selangor DAP’s Ronnie Lie urged PPBM chairman Dr Mahathir Mohamad not to accept Umno MPs who quit the party, reminding the prime minister that he had called them “rubbish” before.

“Well, sir, if they are such useless rubbish, I certainly hope you won’t be a rubbish collector and take them into PPBM,” Liu said in an online post.