Trump may also make it easier for foreign companies to repatriate cash from abroad, and that could potentially help PM in particular.
Obviously, it depends on what the final new tax policy actually is, but some of the floated ideas would benefit domestic companies (such as RAI or MO) more than international companies like PM.
Why?
These are rough numbers and individual companies situations vary, but here is general current situation: The US federal corporate tax rate (excluding additional state income taxes) is 35%. Almost all foreign tax rates are lower, averaging around 25% (obviously depending on the mix of countries where you operate).
The US works on a worldwide tax system, so if you have foreign earnings which you pay a foreign 25% tax on, and then repatriate the remaining earnings to the US, you pay an additional 10% on the same earnings to the US (35%-25%) that you didn't have to pay the foreign governments.
Now there is talk about eliminating that worldwide tax system, and going to a territorial system, which would totally eliminate any extra repatriation tax to the US. If that were to happen, PM would obviously save that roughly 10% that they currently pay when they repatriate profits back to the US to pay dividends.
However, there are also policies to dramatically lower the US corporate tax rate down from 35% to maybe as low as 20%. If that were to happen, MO and RAI would actually save more. They would save 15% since instead of paying 35%, they now pay 20%. However, PM still only saves the 10% because they still owe the foreign tax of 25% which obviously isn't impacted by US policy. Dropping the corporate tax rate this low wouldn't eliminate repatriation taxes by law, but it would effectively eliminate them unless you repatriated profits from a country with a tax rate lower than 20%.