Labour has set out plans to pay for 1,000 extra border guards through additional visa charges in a speech by the shadow home secretary Yvette Cooper.
But the pledge has already been dismissed by Theresa May who insists the party's sums do not add up.
Labour will seek to enhance its pitch to voters on immigration with a pledge to pay for 1,000 extra border guards by imposing a charge on visitors from the US and 55 other countries.
Shadow home secretary Yvette Cooper will criticise other parties for engaging in an "arms race of rhetoric" on the issue in a speech later.
But she will accept that Labour "needs to talk more" about public concerns and say action to restore public confidence that illegal entrants are being caught and dealt with is "vital for a progressive approach".
Under the proposals, nationals in countries enjoying a "visa waiver" system of fast-track permission to enter the UK will face a charge of around £10 per visit, which the party said would more than cover the £45 million cost of the additional staff.
Ms Cooper is expected to say: "Too often the debate about immigration becomes polarised and unhealthy.
"In a shouting match, sensible voices are sometimes not heard, that's why Labour needs to set out practical reforms as part of a sensible debate on the changes we need."
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